Abstract: A method of operating a sensing component for sensing a magnetic field to determine a state of an access point having a first component and a second component that are separable from each other to create an opening and wherein a magnet is mounted on one of the first or second components of the access point, wherein the method comprises: operating the sensing component to sense a magnetic field in multiple dimensions to produce a sample representation of the sensed magnetic field, wherein the sample representation is a multi-dimensional representation and determining whether the sample representation is in a pre-determined region about a reference representation that is representative of a state of an access point to determine that the sensed magnetic field corresponds to said state of the access point, wherein the pre-determined region comprises a circular cross-section.

Abstract: Methods of defining a virtual fence and for detecting a body inside or outside a region of interest defined by the virtual fence and/or of determining a height for a body on a surface in a region of interest use radar signals and a configuration mode and a monitoring mode are disclosed. In the configuration mode coordinates for defining a virtual fence are determined and/or a topology of a surface in the region of interest is determined. In the monitoring mode, a location of a second body on the surface is detected to determine if the second body is inside or outside the virtual fence and/or a height of for the second body relative to the determined topology is determined.

Abstract: A device may monitor an entry to or exit from a space via an access point. The entry access point has a first component and a second component that are separable from each other to create an opening for the entry or exit. The device may comprise a first part for mounting to one of said components and which has a processing component and a sensing component for sensing in multiple dimensions a magnetic field emanating from a second part mounted on the other of the first and second components. The processing component is configured: to receive an indication of the sensed magnetic field; detect a change of condition at the access point when a dynamic quality of the indication of the sensed magnetic field satisfies a predefined criterion; and output an indication of the detected change of condition. There may be a corresponding system, method and memory.

Abstract: An obscuration cloud generation device (100) comprises a housing (101) having a door (102) and a frame (103) sized and shaped to accommodate an obscuration cloud generating canister (110) when the door (102) is in a closed state. Activation of the canister (110) emits a composition for forming the cloud. The door (102) has an operably open state in which the door (102) is open at least a predefined minimum extent for exiting of the emitted composition. A door checking system (104) applies a force for opening the door (102) and generates an indication of whether the door (102) is open at least to the minimum extent. A controller (105) is adapted to instruct the checking system (104) to apply the force and to receive the indication to determine, before activating the canister (110), that the door (102) is not blocked from reaching the operably open state.

Abstract: A sensor unit comprising; a magnetic sensor adapted to detect a magnetic field; a light source adapted to transmit a radiation having a signature; a reflecting member for reflecting radiation emitted by the light source; a radiation sensor adapted to detect radiation reflected by the reflecting member; a controller adapted to generate a signal indicative of a security breach when the magnetic field is detected by the magnetic sensor and the signature is not identified in the radiation received by the radiation sensor.

Abstract: A device may monitor an entry to or exit from a space via an access point. The entry access point has a first component and a second component that are separable from each other to create an opening for the entry or exit. The device may comprise a first part for mounting to one of said components and which has a processing component and a sensing component for sensing in multiple dimensions a magnetic field emanating from a second part mounted on the other of the first and second components. The processing component is configured: to receive an indication of the sensed magnetic field; detect a change of condition at the access point when a dynamic quality of the indication of the sensed magnetic field satisfies a predefined criterion; and output an indication of the detected change of condition. There may be a corresponding system, method and memory.

Abstract: An obscuration cloud generation device (100) is disclosed. It may comprise a container (104) for holding an obscuration cloud generating canister (110), wherein a composition for forming the obscuration cloud is emitted from the obscuration cloud generating canister (110) in response to activating the obscuration cloud generating canister (110). It may further comprise a housing (101) having a frame (103) wherein the container (101) is removably held inside the frame (103). The housing (101) has an opening (105) and a door (102), the door (102) being movable between a closed state for covering the opening (105) and an open state for emission of the composition from the device (100) via the opening (105). The opening (105) is shaped and sized to allow the container (104) to be extracted from the housing (101) through the opening (105) when the door (102) is open to replace the obscuration cloud generating canister (110).

Abstract: An obscuration cloud generation device (100) comprises a housing (101) having a door (102) and a frame (103) sized and shaped to accommodate an obscuration cloud generating canister (110) when the door (102) is in a closed state. Activation of the canister (110) emits a composition for forming the cloud. The door (102) has an operably open state in which the door (102) is open at least a predefined minimum extent for exiting of the emitted composition. A door checking system (104) applies a force for opening the door (102) and generates an indication of whether the door (102) is open at least to the minimum extent. A controller (105) is adapted to instruct the checking system (104) to apply the force and to receive the indication to determine, before activating the canister (110), that the door (102) is not blocked from reaching the operably open state.

Abstract: A sensing device comprising an electromagnetic sensor having a surface with a plurality of different electromagnetic radiation interception areas arranged one above the other, one or more controllable flaps adapted to cover one or more of the different electromagnetic radiation interception areas preventing the electromagnetic sensor from intercepting electromagnetic radiation on the covered electromagnetic radiation interception areas, at least one control mechanism adapted to maneuver the controllable flaps so as to change the covered electromagnetic radiation interception areas and a plurality of lenses located in front of the electromagnetic sensor, each having a different focal length. One of the lenses has a certain focal length and focuses electromagnetic radiation to at least one of the different electromagnetic radiation interception areas, and another of the lenses has a different focal length and focuses electromagnetic radiation to another electromagnetic radiation interception area.

Abstract: A sensing device, comprising: a first sensor, directed vertically down in relation to an identified orientation of the sensing device; at least one second sensor, directed diagonally forward in relation to the identified orientation; at least one hardware processor, electrically connected to the first sensor and the second sensor adapted to: receive at least one first signal from the first sensor or the second sensor indicating a person's presence in a monitored premises; and until receiving at least one second signal from the first sensor or the second sensor indicating an absence of the person from the monitored premises: during a predetermined delay time after receiving the first signal, determine whether one or more expected signals are received from the first sensor or the second sensor; and determine an alarm system operation to be taken subject to the one or more expected signals not being received, according to the determination.