Abstract: Various methods and devices that involve biometrically secured networked devices with enhanced privacy protection are disclosed. For example, a computer-implemented method for onboarding a first biometrically secured device to a network is disclosed. The method comprises generating an asymmetric key pair, transmitting the public key to a second device, and receiving an encrypted master encryption key from the second device. The master key is encrypted with the public key. The method also comprises decrypting the encrypted master encryption key using the private key and receiving an encrypted set of biometric data. The encrypted set of biometric data is a set of biometric data that is encrypted with the master encryption key. The method also comprises storing the set of biometric data on a memory of the first device. The set of biometric data uniquely identifies at least two users that are registered to use both the first and second devices.

Abstract: Various methods and devices that involve tuning filters are disclosed. A disclosed method for tuning a filter comprises trimming a center frequency of the filter. The method also comprises trimming an input signal magnitude of the filter. The method also comprises measuring a performance metric of the filter after trimming the center frequency of the filter and the input signal magnitude of the filter. The method also comprises repeating the trimming steps and the measuring step until the filter is tuned for a first physical test condition. A disclosed device that includes a filter also includes first and second trimming circuits that trim the center frequency and input signal magnitude of the filter. A disclosed system includes a motor to transfer a transmitting device from a first physical test condition to a second physical test condition relative to a proximity coupling device with a filter.

Abstract: Methods and systems for processing secure information are disclosed. One method includes receiving secure data from a user via an input device. The method also includes routing the secure data to a secure processor using a hardware multiplexer. The method also includes processing the secure data using the secure processor. The method also includes receiving non-secure data from the user via the input device. The method also includes routing the non-secure data to a second processor using the hardware multiplexer. The method also includes processing the non-secure data using the second processor. The method also includes altering a routing state of the hardware multiplexer using the secure processor. The routing state of the hardware multiplexer is only controlled by the secure processor.

Abstract: A point-of-sale terminal that generates a radio frequency (RF) field through a flat panel display and touchscreen is disclosed. The point of sale device includes a touchscreen, a display positioned behind the touchscreen, and an antenna located behind the display. The antenna can be entirely within the lateral extent of the touchscreen. The antenna can be mounted to the display via a layer of adhesive or mounted to a support frame. The antenna generates the RF field above the touchscreen.

Abstract: Various methods and devices that involve biometrically secured networked devices with enhanced privacy protection are disclosed. For example, a computer-implemented method for onboarding a first biometrically secured device to a network is disclosed. The method comprises generating an asymmetric key pair, transmitting the public key to a second device, and receiving an encrypted master encryption key from the second device. The master key is encrypted with the public key. The method also comprises decrypting the encrypted master encryption key using the private key and receiving an encrypted set of biometric data. The encrypted set of biometric data is a set of biometric data that is encrypted with the master encryption key. The method also comprises storing the set of biometric data on a memory of the first device. The set of biometric data uniquely identifies at least two users that are registered to use both the first and second devices.

Abstract: Embodiments of the present invention enable near field communication (NFC) through a touch display. Some embodiments include specialized touch displays with lower electromagnetic dissipation factors than standard touch displays. Some embodiments include methods and devices for detecting the activation or deactivation of NFC communication using the touch display and adapting the touch display to that activation or deactivation. Disclosed techniques for adapting the touch display include optimizing the behavior of the touch display for operation in the face of electromagnetic interference when NFC is activated and conducting a partial recalibration of the touch display when NFC is deactivated.

Abstract: A computer-implemented method for pairing a point of sale printer with a client device, using two-way identification, is disclosed. The method comprises receiving, using the point of sale printer and a wireless communication protocol, a request to pair the point of sale printer. The method also comprises deriving, using the point of sale printer, the client device, and a device pairing protocol, a shared secret at the client device and the point of sale printer. The method also comprises printing, using the point of sale printer and upon deriving the shared secret, client device association information on a printout. The method also comprises receiving, using the client device and the printout, the client device association information. The method also comprises associating the point of sale printer and the client device using the client device association information as received using the client device.

Abstract: Embodiments of the present invention enable near field communication (NFC) through a touch display. Some embodiments include specialized touch displays with lower electromagnetic dissipation factors than standard touch displays. Some embodiments include methods and devices for detecting the activation or deactivation of NFC communication using the touch display and adapting the touch display to that activation or deactivation. Disclosed techniques for adapting the touch display include optimizing the behavior of the touch display for operation in the face of electromagnetic interference when NFC is activated and conducting a partial recalibration of the touch display when NFC is deactivated.

Abstract: Various methods and devices that involve character recognition on a touch display, or other input device, are disclosed. Some of these may facilitate the recognition of characters that are input by people with physical impairments such as those with limited eyesight. A disclosed free-hand character recognition device comprises: an input device having stroke detection circuitry to accept input data from a user; a character recognition engine instantiated using a processing system and a data store; and a network connection to a server. The device additionally comprises a memory storing instructions to: conduct an unobtrusive user recognition procedure to obtain a user identifier from the user; download a cipher from the server to the data store using the network connection and the user identifier; and generate a prediction vector using the character recognition engine, the input data, and the cipher.

Abstract: Various methods and devices that involve tuning filters are disclosed. A disclosed method for tuning a filter comprises trimming a center frequency of the filter. The method also comprises trimming an input signal magnitude of the filter. The method also comprises measuring a performance metric of the filter after trimming the center frequency of the filter and the input signal magnitude of the filter. The method also comprises repeating the trimming steps and the measuring step until the filter is tuned for a first physical test condition. A disclosed device that includes a filter also includes first and second trimming circuits that trim the center frequency and input signal magnitude of the filter. A disclosed system includes a motor to transfer a transmitting device from a first physical test condition to a second physical test condition relative to a proximity coupling device with a filter.

Abstract: Techniques and systems for selecting advertisements for dissemination over a network are disclosed. In one embodiment, an advertisement service stores information indicative of offers from merchants, including information indicating an amount of revenue that the offering merchant would be willing to share with the advertisement service if a consumer consummates a transaction with the merchant based on the good or service advertised in the offer. The service computes predicted conversion rates for these offers, and uses the predicted conversion rates and the revenue sharing information to select an advertisement for dissemination according to which advertisement is expected to generate the greatest amount of revenue for the advertisement service.