Abstract: A blast attenuation device (100, 1100) for a gun tube (10). The blast attenuation device (100, 1100) has a first wall section (102, 1102) which defines a first chamber (104, 1104), which extends from an inlet end (106, 1106) having an inlet aperture (108, 1108) to an outlet end (110, 1100) having an outlet aperture (112, 1112). The blast attenuation device (100, 1100) also has a second wall section (122, 1122) which defines a second chamber (124, 1124), which extends from an inlet end (126, 1126) having an inlet aperture (128, 1128) to an outlet end (130, 1130) having an outlet aperture (132, 1132).

Abstract: A bipod for supporting a firearm above a surface is provided, comprising a pair of opposed bipod legs which are pivotally mounted for rotation about respective inclined intersecting axes. The bipod comprises a spigot for connecting the bipod to the firearm, or to an fitting mounted on the firearm, the spigot being mounted on, or integral with, a pivotable element which is arranged to pivot about an axis extending within a triangular area defined by the inclined intersecting axes about which the bipod legs pivot and a plane defined by corresponding upper surfaces of the opposed legs when depending from the bipod in a nominal upright condition.

Abstract: A thin, flexible protective firearm cover is disclosed. The firearm cover can comprise a narrow barrel portion to receive and enclose a muzzle end of a firearm, a butt portion to receive and enclose a butt end of the firearm, and an intermediate portion between the barrel portion and the butt portion. The intermediate portion can have a size-adjustable opening that flexibly expands to allow the firearm to pass through. Reducing the size of the opening draws the butt portion and the barrel portion toward one another to secure the firearm cover about the firearm when the firearm is disposed in the cover. The firearm cover is thin and flexible to provide for compact storage of the firearm cover when the cover is not in use.

Abstract: A compound bow is disclosed. The bow, in an embodiment includes a handle component, pulleys, strings and limbs. Both ends of the structure are connected with limbs via screws. A notch is provided for the upper limbs. The pulley assembly is detachably arranged in the notch. The two pulleys constitute axisymmetric. The string assembly is respectively connected with the pulley assembly and the limbs. The handle component includes an upper section, a position mounting structure and a lower section. The upper end of the handle and the lower end of the upper section are fixed and connected in a detachable manner. The lower end of the handle and the upper end of the lower section are fixed and connected in a detachable manner.

Abstract: A crossbow may have a main beam, two bow limbs, a bow string and a trigger mechanism. First ends of the bow limbs may extend distally beyond the distal end of the main beam on respective sides of the main beam. The bow limb first ends may be separated from each other such that a minimum distance between them is at least as wide as a user's foot but not greater than about 5 inches.

Abstract: An open frame revolver may have an upper frame and lower frame pivotally connected together, an opening located in between the upper frame and the lower frame. A spring assembly may be located in the lower frame and a trigger assembly located in the lower frame, wherein the trigger assembly is connected to the spring assembly. A tension axle located in the lower frame, wherein the tension axle on one end connected to the trigger assembly and spring assembly and on the other end has a lock. A hammer axle may be located inside a drum, wherein the drum could be pivotally supported by hammer axel and hammer axle may have a lock on one end. A hammer may be located outside of the upper frame connected to the hammer axle, a safety lock located in the lower frame, while a frame lock located on the lower frame.

Abstract: A launcher for launching a flying vehicle, such as a projectile or missile, includes a cutter for cutting a line, such as an umbilical line, that is coupled to the vehicle prior to launch. An example of a line is a tube for providing cooling for onboard components of the vehicle, such as a seeker of the vehicle. The cutter may be part of a mount of the launcher for mounting the line and other components, such as a compressor. The cutter may be configured so that as the vehicle translates relative to the launcher during the initiation of launch, the line moves against the cutter, severing the line. The cutter may retract after severing the line, for example being pulled away from the vehicle (and into the mount) by a spring mechanism.

Abstract: Sights of the present disclosure comprise a housing supporting an optical sighting element, such as one or more lenses or iron sights. A first lateral side of the housing has a laterally-extending protrusion and a lead-in portion forward of the laterally-extending portion. In some arrangements the lead-in portion is laterally-inward of an outermost surface of the laterally-extending protrusion and has a surface roughness of less than 50 ?m. In some instances, the laterally-extending protrusion has a width of at least 1 mm and the lead-in portion has a length of at least five times the width of the laterally-extending protrusion.

Abstract: Systems, devices, and methods for determining a predicted impact point of a selected weapon and associated round based on stored ballistic information, provided elevation data, provided azimuth data, and provided position data.

Abstract: Firearms and accessories are disclosed herein. The firearm can carry a scope mounting assembly configured to couple to a firearm and includes serrated interfaces configured to engage a complementary serrated interface of a component such that the component is rotationally and translationally fixed to the scope mounting assembly. The interlocked serrated interface maintains positional relationships between the component and another component, such as a scope, and/or the firearm.

Abstract: A system, apparatus, composition, and methods for producing a modular, ultra-thin, ultra-lightweight thermal camouflage, thermal signature mitigation and thermal insulation system. The thermal management system may comprise one or more composite layers or combinations of ultra-thin and ultra-lightweight non-woven stealth coated substrates. Each composite layer may be coated with specific components to create different thermal camouflage through a biomimicry application process of absorbance, reflective, protective layering, thermal signature mitigation, and/or thermal insulation system capabilities. Layers can be combined to enable dynamic stealth camouflage tunable performances of reflectivity, transmission, emissivity, or absorption in selective visible, near infrared, and infrared wavelength bands whereby each substrate has a unique EM wave propagation control or thermal signature mitigation characteristics.

Abstract: An Active Shooter Protection System (ASPS), comprising a variety of gravity-operated mechanisms for deploying one or more ballistic sheets, panels, or blankets of woven ultra-high-strength polymeric fiber (e.g., Kevlar™) directly in front of a door, such as in a school room. The deployment of a ballistic blanket is initiated by pulling down on a pull box, which activates a release that lowers down one or more segments of the ballistic blanket that is stored above a top of a door plate. The ASPS system includes means for securely locking the door shut (in addition to a dead bolt lock). The ballistic panels can include optional ceramic inserts for greater protection from high-power AR-15 rifles.

Abstract: Lightweight ballistic glasses are provided that provide effective protection from ballistic attack while also being lightweight enough for use in armored vehicles and aircraft. In addition to other embodiments, a multilayered lightweight ballistic glass is provided that meets the CEN 1063 Level BR6 standard, has a weight of no greater than about 75 kilograms per square meter (kg/m2), and a total thickness less than about 40 mm.

Abstract: Lightweight ballistic glasses are provided that provide effective protection from ballistic attack while also being lightweight enough for use in armored vehicles and aircraft. In addition to other embodiments, a multilayered lightweight ballistic glass is provided that meets the CEN 1063 Level BR7 standard while having a weight of no greater than about 155 kilograms per square meter (kg/m2), and a total thickness of less than about 75 mm.

Abstract: A fiber-reinforced composite material, consisting of an amorphous thermoplastic matrix distributed over a surface of an aramid fabric and forming a surface thermoplastic film partially interpenetrated with and adhering to the aramid fabric. The production method comprises the steps of: unwinding an aramid fabric on conveyor means; distributing a thermoplastic matrix in the form of micrometric powder over the whole upper surface of the aramid fabric as it is unwound; passing the material through a first hot section and then through a second relatively cold section; the first section applies a temperature and a pressure such as to form a surface thermoplastic film on the fabric; the second section facilitates detachment of the coated material from the conveyor means.

Abstract: A personal protective vest assembly is described herein. The personal protective vest assembly includes a personal protective vest and a body armor panel positioned within the personal protective vest. The body armor panel includes a ballistic material panel assembly that includes a plurality of layered material segments defined between a strike face and a wear face. Each of the layered material segments includes a different ballistic material.

Abstract: A ballistic shield including: a shield body with a front surface and a back surface opposite the front surface, a viewport disposed in an opening of the shield body, where the viewport includes a front surface and a back surface opposite the front surface of the viewport; a front bezel covering at least a portion of the front surface of the shield body and a front surface of the viewport; a gasket covering at least a portion of the back surface of the shield body and a back surface of the viewport; and a back bezel covering at least a portion of the gasket.

Abstract: A projectile and method for stopping aerial vehicles. The projectile comprises a shell—and a bunch of filaments. The bunch is wound in a coil and placed inside the shell. The projectile according to the solution may be brought to a target by different methods and utilising different means. For example, the projectile may be fired with compressed air or a propulsion charge, by using a compressed air weapon or rocket launcher. In addition, the projectile may be taken to the target by using a rocket or aerial vehicle.

Abstract: A molded arrow assembly preferably includes an insert and an outsert for an arrow or an insert/outsert assembly. The molded arrow assembly may include an insert having a cylindrical body with a first end and a second end. The second end may be dimensioned to fit within a bore of an arrow shaft. The first end may terminate in a prong containing male threads. The insert/outsert assembly may also include an outsert having a cylindrical wall with an arrow shaft end and an arrowhead end. The cylindrical wall may also include a center bore extending between the arrow shaft end and the arrowhead end. The center bore may contain a threaded region containing female threads. The threaded region may be located intermediate of the arrowhead end and the arrow shaft end and may extend between a top shoulder and a bottom shoulder.

Abstract: An arrow head cluster is created utilizing an injection mold. An upper cluster cavity is formed in an upper die member and a lower cluster cavity is created in a lower die member. The upper and lower cluster cavities, when joined create a cluster cavity. The cluster cavity is used to create the arrow head cluster, after molten material is injected into the injection mold. The cluster cavity includes a plurality of chambers for creating a plurality of arrow heads. The plurality of chambers are connected to each other with a plurality of flow channels and a support frame. The injected material includes metals, ceramic and plastic. The materials are injected into the cluster cavity through the plurality of flow channels. The plurality of flow channels allow the material to flow evenly through the plurality of cluster cavities.

Abstract: A projectile and stabilizer therefor are provided. The sliding stabilizer is used instead of fixed or glued tail feathers, vanes or other fletching as a means for stabilizing projectile flight. The invention improves current projectile technology with reduced assembly labor cost, the elimination of bow clearance issues, improved accuracy with the consistent production of the sliding stabilizer, easy replacement of the stabilizer in the field, and improved projectile storage. A sliding stabilizer is designed to slide along the shaft of a projectile and comprises a circumferentially extending wing and a plurality of fins. In use, the stabilizer is positioned at the front of the projectile prior to launch, and the projectile slides quickly through the stabilizer until secured at a stop position at or near the trailing end of the projectile. An annular arrow fletch and arrow stabilizer are also provided.

Abstract: The tracer projectile having a closure disk assembly is described. The tracer projectile includes a projectile base with a tracer cavity formed therein. A pyrotechnic charge is pressed into the tracer cavity and is ignitable by burning propellant such that a trajectory of the projectile is visible when fired. A closure disk assembly covers and seals the tracer cavity. A crown of the closure disk assembly is supported on a ring flange formed by an annular groove in the projectile base. A sidewall of the closure disk assembly surrounds the ring flange. A retaining element is disposed in the annular groove and engages a rim of the closure disk assembly for securing the closure disk assembly to the projectile base over the tracer cavity.

Abstract: In various embodiments, a projectile includes a projectile body including a tail portion, a nose portion, a barrel engaging portion between the nose portion and the tail portion, and a metal jacket that defines an exterior of the projectile that surrounds an interior solid core. In one or more embodiments the projectile includes one or more circumferential grooves defined in the interior core portion, each of the one or more circumferential grooves covered by and positioned adjacent to the metal jacket and within the barrel-engaging portion. In various embodiments, during firing of the projectile, the one or more circumferential grooves define a void that allows material of one or more of the metal jacket and interior solid core to displace into the void for reduction in radial stiffness to the projectile in the barrel engaging portion.

Abstract: A method for initializing a Wiegand-sensor-based rotary angle measuring system. The method includes mounting the Wiegand-sensor-based rotary angle measuring system at a place of use, and feeding an initialization alternating current into a sensor coil which, after the mounting, radially surrounds a Wiegand wire. The initialization alternating current is provided with a current direction which alternates with time and with a current amplitude which decreases with time.

Abstract: The present invention relates to a chromatic confocal sensor based on a geometrical phase lens, and provides a chromatic confocal sensor that can confirm a height of a specimen and a location of a height measurement point through a configuration of a simple device.

Abstract: Disclosed is a system and a method for determining the thickness of a refractory material forming part of a manufacturing vessel, such as a furnace or ladle, using a surface profile scanning while the vessel is maintained at operating temperatures. The system and method are operative to determine the relative positionings of an internal surface and the corresponding external surface of such material, based on a plurality of surface profile data scans. Additionally, a computational algorithm can process these data and/or other data to determine certain flaws of the refractory material, including the presence of gaps within and bending or deformation of such material for a more accurate determination of its thickness. This provides a way to early warn a user of the risk of continuing operating the vessel, achieve a higher operational safety, and more accurately estimate both the remaining operational life and the maintenance plan of the vessel.

Abstract: An optical system is configured to support eye tracking operations in a head mounted device. The optical system includes a transparent layer, a laser, and first and second output couplers. The laser is configured to emit light into the transparent layer. The first output coupler is configured to out-couple a first portion of the light from a first location of the transparent layer. The second output coupler is configured to out-couple a second portion of the light from a second location of the transparent layer. The first and second output couplers are in the field-of-view of a user. A combination of the first portion of the light and the second portion of the light out-coupled from the first output coupler and the second output coupler is configured to generate a fringe pattern, for example, on an eye of a user of the head mounted device.

Abstract: Systems and methods for acquiring measurements of structures of a bonded sample are disclosed. Such systems and methods may include determining a first registration measurement of a first registration structure and a first interface target structure of a first sample, and a second registration measurement of a second sample prior to coupling the samples together. Such systems and methods may include, after such a coupling of the samples, determining a third registration measurement of the coupled sample at least partially by measuring the first registration structure through the top face of the first sample. Such systems and methods may include acquiring an overlay measurement based on the first registration measurement, the second registration measurement, and the third registration measurement. Such systems and methods may include adjusting an inter-sample coupling recipe based on the overlay measurement, where the inter-sample coupling recipe may include a final bonding recipe.

Abstract: An apparatus and method for aligning two coaxially coupled rotatable shafts. A servo operated multi axis positioning device is movable along a longitudinal axis parallel to the axis of the shafts, and movable vertically to position a laser range (LRF) adjacent to the two shafts, which measures the distance between the LRF and a spot on the shafts. A controller having a processor and memory communicates with the positioning device and the LRF to collect data at two axial positions on each shaft. At each position the LRF measures the distance to the shaft and stores the measurement and location data. The LRF is vertically repositioned and the measurement and storing steps are repeated over a scan distance sufficient to provide enough data to determine the location of the shaft center. The processor then calculates and compares the shafts centerlines and determines the necessary adjustments needed to move the shafts into coaxial alignment.

Abstract: A method of calibrating a coordinate measuring machine in which the immutable parameters of the articulated probe head are determine and stored at factory, while the connection parameters and other parameters dependent on the configuration of the system are determined in-situ, with a calibration artifact. The process builds a mathematical model that is the composition of an immutable factory-determined model with the in-situ model. The immutable model can be stored in a non-volatile memory physically provided in the articulated head. The method can fall back to a correction look up table for certain selected orientations of the probe where improved accuracy is needed.

Abstract: A method of measuring a structure includes acquiring azimuth and tilt readings at a first location and second location. Images of the structure are also acquired from the first and second location. The respective distances from the first and second locations to a first and second point on the structure are measured. A scale is established from two positions of the structure depicted in the first or second image of the structure. The distance between the first and second points on the structure is found using the established scale. This distance is used with the azimuth and tilt readings and measured distances from the first and second location to build an epipolar model of the structure. The structure may be a utility pole. Also disclosed are methods of assisting photogrammetric measurements and estimating the class of a utility pole, and methods of determining the compliance status of a utility pole.

Abstract: A method and system for prediction of wave properties include collecting time-series data streams from one or more wave measurement devices and processing the data to identify data parameters to establish boundary conditions of a numerical model. The numerical model may be used to compute a predicted wave field of time-series data for a variety of wave properties at a target location.

Abstract: This specification describes a sensing device that is permanently installed in a riverbed to monitor sediment scour and deposition levels to provide information regarding hazards to infrastructure or ecological systems. The sensor is oblong and composed of fiber optic cables and other materials such that the sensor body is held orthogonal to the riverbed/river water interface and can be interrogated continuously or periodically to provide information on the spatial position of the riverbed/river water interface. The sensor is more accurate than existing options because it simultaneously senses the physical condition of fiber optic cable where it is buried in static sediment, and where it is exposed to moving river water. Intrinsic interrogative sensing is performed on the fiber optic cable or cables for strain, temperature, or acoustic vibration conditions, or combinations thereof. Methods for fabrication, installation, and use of the sensor are also described and claimed.

Abstract: A device and methods of placing the device for indicating tidal water depth is described. The device having a body in a vertical orientation, with a top, bottom, and at least one viewing surface, with a measurement scale of numerals and marks displayed on the at least one viewing surface, where the numerals increase in value in a direction from the bottom towards the top of the body.

Abstract: The purpose of this invention is to provide a building change detection device, and the like, that make it possible to easily compare a three-dimensional model of a building corresponding to individual points in time and a model of the building based on reference information. A building change detection device comprises a measurement data acquisition means for acquiring measurement data indicating the results of measurement based on emitted laser light emitted onto a region under measurement including a building and reflected laser light, a building model generation means for using the measurement data to generate a building model that is a three-dimensional point-cloud model of the building, a building reference model acquisition means for acquiring a building reference model, and a display control means for carrying out control for displaying a first image including the building reference model and the building model.

Abstract: An optical detection unit comprising a retro-reflecting element which provides a reflection surface configured for retro-reflecting a first part of measuring light as reflected measuring light for providing determination of a position of the optical detection unit and a passage surface configured for transmitting a second part of the measuring light as transmitted measuring light, further comprising a sensor arrangement with a sensor configured and arranged behind of the retro-reflecting element so that the transmitted measuring light is detectable by the sensor. The optical detection unit comprises a referencing assembly with at least one illumination unit configured to emit reference illumination light. The at least one illumination unit is arranged with fixed positional relationship to the retro-reflecting element and/or the sensor arrangement and the referencing assembly is configured and arranged to direct the reference illumination light onto the sensor.

Abstract: An inertial measurement device includes: a first case and a second case; a board that is disposed in a space formed by the first case and the second case, that includes a first surface and a second surface, and in which a first inertial sensor is disposed at the first surface; a first filling material configured to fill between the first surface of the board and the first case and between the first inertial sensor and the first case; and a second filling material configured to fill between the second surface of the board and the second case.

Abstract: The present disclosure is directed to a dual-mode control circuit for a microelectromechanical system (MEMS) gyroscope. A control circuit is coupled to a Lissajous frequency modulated (LFM) gyroscope to control amplitude of oscillation of a mass along two directions. The amplitude of oscillation is controlled by an automatic gain control (AGC) loop which allows the same amplitude of oscillation in both directions. An AGC is implemented with a combination of proportional control (P-type) and integral control (I-type) paths that maintain the correct Lissajous pattern of the oscillation of the mass. The AGC may include a dual-mode stage which is able to switch between a P-type control path and an I-type control path based on the operation of the LFM gyroscope. A fast start-up phase may be controlled by the P-type control path while the I-type path is pre-charged to be ready to use in a steady state condition.

Abstract: Provided is a fully decoupled MEMS gyroscope, including an anchor point unit, a sensing unit elastically connected to the anchor point unit, and a driving unit configured to drive the sensing unit to move. The anchor point unit includes a center anchor point subunit located at a center of a rectangle and four side anchor points. The driving unit includes four driving members located on four sides of the rectangle. The sensing unit includes two X mass blocks symmetrically arranged in two avoiding intervals, two Y mass blocks symmetrically arranged in the other two avoiding intervals, four Z mass blocks respectively located at an outer side of each driving member, and four Z detection decoupling members respectively located at an outer side of each Z mass block. The X mass blocks and the Y mass blocks are respectively connected to each side anchor point.

Abstract: An inertial measurement device includes: a board; a first inertial sensor configured to detect a physical quantity of a first axis and disposed perpendicular to the board; a rigid case configured to cover the first inertial sensor; and a filling material disposed between the first inertial sensor and the case.

Abstract: Systems and methods for a stabilized evaporable getter for increased handleability is provided. In certain embodiments, a method includes preparing a first getter material, a second getter material, and a metal material. Additionally, the method includes mixing the first getter material, the second getter material, and the metal material into a mixed getter material. Further, the method includes placing the mixed getter material into a getter holder. Also, the heat-treating the getter holder at a temperature below an activation temperature for an exothermic reaction of the mixed getter material but above a melting temperature of the metal material.

Abstract: The present invention generally relates to systems, methods and program products for guiding a participant in an outdoor activity.

Abstract: In some embodiments, a method comprises: receiving acceleration data from a motion sensor of a mobile device carried by a user, the acceleration data represented by a space curve in a three-dimensional (3D) acceleration space, the space curve indicative of a cyclical vertical displacement of the user's center of mass accompanied by a lateral left and right sway of the center of mass when the user is stepping; computing a tangent-normal-binormal (TNB) reference frame from the acceleration data, the TNB reference frame describing instantaneous geometric and kinematic properties of the space curve over time; and computing a direction of travel of the user based on an orientation of a unit binormal (B) vector of the TNB reference frame in the 3D acceleration space, and computing a speed of the user based on a linear regression model applied to the kinematic properties of the TNB reference frame.

Abstract: Provided is an inertial measurement device of an electric motorcycle. The electric motorcycle includes a vehicle frame unit including a head tube support frame and a secondary frame; a seat cushion arranged on the secondary frame and including an operator's hips seat; a battery box arranged on the vehicle frame unit and located at a front lower side of the seat cushion, a power unit arranged on the battery box, a vehicle body cover unit covering the vehicle frame unit, an inertial measurement unit mounted on the vehicle frame unit. A lower side of the seat cushion, a front side of a vertical imaginary line in a vehicle body up-down direction and passing through a rear end of the operator's hips seat, a bottom edge of the secondary frame, and a rear side of the battery box jointly define a mounting space, in which the inertial measurement unit is mounted.

Abstract: A system and method for path navigation accuracy estimation. A method includes determining a degree of obstruction for each of a plurality of objects shown in visual content, wherein the degree of obstruction for each object represents a degree to which the object will obstruct visibility by a vehicle capturing visual content in an environment where the vehicle is navigating and the plurality of objects are disposed; determining, for each of a plurality of operational points, a co-visibility of the vehicle at the operational point based on a pose of the vehicle at the operational point and the degree of obstruction for each of the objects which is within view of the vehicle at the operational point; and estimating a visual navigation performance at each of the operational points based on the co-visibility determined for the operational point.

Abstract: A ray is cast into a volume described by a volumetric data structure, which describes the volume at a plurality of levels of detail. A first entry in the volumetric data structure includes a first set of bits representing voxels at a lowest one of the plurality of levels of detail, and values of the first set of bits indicate whether a corresponding one of the voxels is at least partially occupied by respective geometry. A set of second entries in the volumetric data structure describe voxels at a second level of detail, which represent subvolumes of the voxels at the first lowest level of detail. The ray is determined to pass through a particular subset of the voxels at the first level of detail and at least a particular one of the particular subset of voxels is determined to be occupied by geometry.

Abstract: A system and sensor device for determining geolocation data. A plurality of nodes, each at a predetermined location is provided. Each node emits a time-varying magnetic field, each time-varying magnetic field having a characteristic identifying the node. A sensor device comprises a magnetometer, the magnetometer configured to detect the time-varying magnetic field from at least one of the plurality of nodes, the magnetometer comprising diamond comprising at least one quantum spin defect. The sensor device has a processor configured to determine the identifying characteristic from the sensed time-varying magnetic field, and is further configured to determine geolocation data on the basis of at least the determined identifying characteristic.

Abstract: The present disclosure provides methods and systems for tracking a shipping vessel travel route through a retail enterprise during a stock cycle. Location information associated with assets can be collected at a retail location, from which a detailed route through the retail location may be recreated and overlaid on map data reflecting a retail location layout. Further analysis may be performed on the route. Additionally, the route may be overlaid on a map, including product information and packaging information, allowing for various metrics and metric visualizations to be generated that can be further analyzed to achieve various objectives.

Abstract: Methods and systems (100) for trajectory prediction are provided. The methods and systems (100) include operations comprising: receiving (501) a plurality of observed speed points; processing (502) the plurality of observed speed points corresponding to the observed trajectory by a machine learning technique to generate a plurality of predicted speed points, the machine learning technique being trained to establish a relationship between a plurality of training observed speed points and training predicted speed points; determining (503) a future trajectory based on the plurality of predicted speed points, each of the plurality of predicted speed points corresponding to a different slice of a plurality of slices of the future trajectory; determining (504) that a target access control device is within a threshold range of the future trajectory; and performing (505) an operation associated with the target access control device (110).

Abstract: An Augmented Reality (AR) wayfinder tracks the current location of a user within an indoor location relative to a path defined through the indoor location for the user. The path is broken into segments, each segment is a straight line between two nodes, and each node represents either a starting point in the path, a turn along the path, or an ending point in the path. As the user traverses the path, a remaining distance between the user device and the next node in the path is calculated. An AR object with attributes that correlate to the remaining distance to the next node is blended into and superimposed into a video that the user is viewing through the user device of the physical environment as the user travels along the path.