Abstract: A transaction card includes a near-field communication (NFC) component, a security component, a wireless component, one or more memories, and one or more processors communicatively coupled to the one or more memories. The device receives a signal from a user device attempting to access a secure application, and energizes the NFC component based on the signal received from the user device. The device causes the security component to generate an encrypted code based on the NFC component being energized, and provides, via the security component, the encrypted code to the wireless component. The device provides, via the wireless component, the encrypted code to the user device to permit the user device to utilize the encrypted code as authentication for accessing the secure application.

Abstract: An example transaction card may include a sensor to measure movement of the transaction card and one or more processors to monitor the movement of the transaction card via the sensor during a tracking period; determine measurements of a gait of a user during the tracking period from the movement of the transaction card during the tracking period; compare the measurements of the gait of the user during the tracking period and a gait signature associated with the transaction card; and/or perform an action associated with the transaction card based on a result of comparing the measurements of the gait of the user during the tracking period and the gait signature.

Abstract: A submersible well fluid system for operating submerged in a body of water may include an electric machine and a fluid end. The electric machine includes a rotor and a stator residing in a first housing at specified conditions. The fluid end may include an impeller and be coupled to the electric machine. The submersible well fluid system may also include an adjustable speed drive for the electric machine in the housing. The submersible well fluid system may also include a chemical distribution system for supplying treatment chemicals to the submersible well fluid system, a barrier fluid supply system for supplying a barrier fluid to the submersible well fluid system, and a pressure management system.

Abstract: In some implementations, a near field communication (NFC) device may determine whether the NFC device is to perform a wireless transaction in a powered mode or an unpowered mode, and may selectively perform the wireless transaction in the powered mode or the unpowered mode based on determining whether the NFC device is to perform the wireless transaction in the powered mode or the unpowered mode. The wireless transaction may be performed using power from a power source internal to the NFC device when the wireless transaction is performed in the powered mode. The wireless transaction may be performed without using power from the power source internal to the NFC device when the wireless transaction is performed in the unpowered mode.

Abstract: A transaction card may determine to initiate a mode associated with the transaction card. The mode may be related to locating the transaction card. The mode may be associated with outputting a first signal. The transaction card may determine a manner in which to configure the mode based on a set of parameters. The set of parameters may include a power level of the transaction card, or a strength of a second signal associated with a connection between the transaction card and a device associated with the transaction card. The transaction card may initiate the mode after configuring the mode. The transaction card may determine to terminate the mode based on an indication that the transaction card has been located.

Abstract: Systems and methods for in-store purchases are provided. An exemplary method may include receiving by a customer device associated with a customer, customer data including customer preference data. The method may include storing the received customer data and identifying a merchant at a location of the customer. The method may also include determining a customer order for the identified merchant based on the customer preference data. Further, the method may include transmitting a notification to a merchant device associated with the identified merchant, the notification including the determined customer order.

Abstract: A device may determine that a verification method associated with a transaction card is to be modified from a first verification method to a second verification method. The first verification method and the second verification method may use different types of verification information. The device may provide a set of instructions to the transaction card after determining that the verification method is to be modified. The set of instructions may cause the transaction card to modify the verification method from the first verification method to the second verification method. The device may provide information identifying a modification to the verification method to a transaction backend device to notify the transaction backend device that the verification method associated with the transaction card has been modified from the first verification method to the second verification method.

Abstract: A two-tier Anycast addressing hierarchy enables deterministic traffic management in an Anycast system. Different locations of the Anycast system advertise a common Anycast cover route comprising a first-tier Anycast address with a first address prefix, and different specific routes comprising a set of second-tier Anycast addresses with a second address prefix, wherein each address of the set of second-tier Anycast addresses falls within the already advertised Anycast cover route, and wherein the second prefix is larger than the first prefix. Domain Name System (DNS) operation can resolve queries to the cover route when normal Anycast operation is desired or can be modified to resolve a subset of queries to a particular second-tier address in order to shift a deterministic amount of traffic based on the resolved subset of queries to a deterministically selected Anycast system location based on the location from which the particular second-tier address is advertised.

Abstract: An example transaction card may include a sensor to measure movement of the transaction card and one or more processors to monitor the movement of the transaction card via the sensor during a tracking period; determine measurements of a gait of a user during the tracking period from the movement of the transaction card during the tracking period; compare the measurements of the gait of the user during the tracking period and a gait signature associated with the transaction card; and/or perform an action associated with the transaction card based on a result of comparing the measurements of the gait of the user during the tracking period and the gait signature.

Abstract: A method includes receiving a circuit design including a plurality of components associated with a plurality of component parameters. The method further includes adjusting a value of a particular component parameter of the plurality of component parameters based on a tolerance to generate a modified plurality of component parameters. The method further includes determining, based on inputting the modified plurality of component parameters into a circuit calculator, that an operating value of the circuit design is sensitive to the particular component parameter. The method further includes selecting a simulation of the circuit design to perform based on the particular component parameter. The method further includes performing the simulation to determine whether the circuit design supports one or more design limits.

Abstract: A device may determine that a verification method associated with a transaction card is to be modified from a first verification method to a second verification method. The first verification method and the second verification method may use different types of verification information. The device may provide a set of instructions to the transaction card after determining that the verification method is to be modified. The set of instructions may cause the transaction card to modify the verification method from the first verification method to the second verification method. The device may provide information identifying a modification to the verification method to a transaction backend device to notify the transaction backend device that the verification method associated with the transaction card has been modified from the first verification method to the second verification method.

Abstract: The invention provides for the removal of a large fraction of contaminants from protein preparations while maintaining a high level of recovery using tentacle anion exchange matrix chromatography medium. Using the methods of the invention, leached affinity chromatography contaminants can be removed from recombinant protein preparations.

Abstract: A method includes obtaining a first waveform representing an output characteristic with respect to time of a switched-mode power supply. The method further includes removing a high frequency component from the first waveform to generate a modified waveform and determining a stable value of the modified waveform. The method further includes determining an operating parameter of the switched-mode power supply based on the modified waveform, the stable value, or a combination thereof. The one or parameter includes an overshoot value associated with the switched-mode power supply, an undershoot value associated with the switched-mode power supply, or a settling time associated with the switched-mode power supply. The method further includes outputting an indication of the parameter.

Abstract: A submersible well fluid system for operating submerged in a body of water may include an electric machine and a fluid end. The electric machine includes a rotor and a stator residing in a first housing at specified conditions. The fluid end may include an impeller and be coupled to the electric machine. The submersible well fluid system may also include an adjustable speed drive for the electric machine in the housing. The submersible well fluid system may also include a chemical distribution system for supplying treatment chemicals to the submersible well fluid system, a barrier fluid supply system for supplying a barrier fluid to the submersible well fluid system, and a pressure management system.

Abstract: In some implementations, a near field communication (NFC) device may determine whether the NFC device is to perform a wireless transaction in a powered mode or an unpowered mode, and may selectively perform the wireless transaction in the powered mode or the unpowered mode based on determining whether the NFC device is to perform the wireless transaction in the powered mode or the unpowered mode. The wireless transaction may be performed using power from a power source internal to the NFC device when the wireless transaction is performed in the powered mode. The wireless transaction may be performed without using power from the power source internal to the NFC device when the wireless transaction is performed in the unpowered mode.

Abstract: A transaction card may determine to initiate a mode associated with the transaction card. The mode may be related to locating the transaction card. The mode may be associated with outputting a first signal. The transaction card may determine a manner in which to configure the mode based on a set of parameters. The set of parameters may include a power level of the transaction card, or a strength of a second signal associated with a connection between the transaction card and a device associated with the transaction card. The transaction card may initiate the mode after configuring the mode. The transaction card may determine to terminate the mode based on an indication that the transaction card has been located.

Abstract: A device may monitor, based on location information, a proximity of a vehicle and a third party location of a third party using a set of sensors. The location information may have been received from the vehicle. The location information may identify a location of the vehicle and the third party location. The device may process personal information to determine that an order is associated with the vehicle or an individual associated with the vehicle. The personal information may have been received from the vehicle. The device may receive, via another device associated with the vehicle or the individual, confirmation to complete a transaction for the order. The device may perform a first action to complete the transaction. The device may perform a second action to facilitate a good or a service associated with the order to be delivered to the vehicle in association with performing the first action.

Abstract: The keyless entry system (KES) controls access to a vehicle's doors, trunk, hood, etc., through a keyless entry device (e.g., a key fob) using wireless communication with the vehicle. The technology described here mitigates vulnerabilities in the KES implementation by employing a device configured to suppress a keyless entry command until an additional means of authentication is verified, at which point the keyless entry command is unsuppressed.

Abstract: A private networked database system utilizing mobile devices offers centralized access, reconciliation, and sharing of data, for example consumer immunization information. The system provides technical features not previously available, including bidirectional data transmission and replication across government-controlled databases located in multiple states.

Abstract: A transaction card may determine to initiate a mode associated with the transaction card. The mode may be related to locating the transaction card. The mode may be associated with outputting a first signal. The transaction card may determine a manner in which to configure the mode based on a set of parameters. The set of parameters may include a power level of the transaction card, or a strength of a second signal associated with a connection between the transaction card and a device associated with the transaction card. The transaction card may initiate the mode after configuring the mode. The transaction card may determine to terminate the mode based on an indication that the transaction card has been located.