A structure for a contact-less card, the contact-less card may include a buzzer coupled to a fixed power source. The contact-less card may include a vibration motor coupled to the fixed power source. The contact-less card may include a controller coupled to the buzzer and the vibration motor. The controller includes a first integrated circuit. The first integrated circuit transmits a trigger signal to the buzzer and the vibration motor based on an enablement signal. The contact-less card may include a contact-less communication controller electrically coupled to the controller. The contact-less communication controller comprises a second integrated circuit containing card information. The second integrated circuit transmits the card information based on an induced voltage. The second integrated circuit transmits the enablement signal to the controller based on an induced voltage. The contact-less card may include an antenna electrically coupled to the contact-less communication controller. The antenna transmits card information.

There is provided a fingerprint sensing module comprising a fingerprint sensor device having a sensing array arranged on a first side of the device. The fingerprint sensor device also comprises connection pads for connecting the fingerprint sensor device to external circuitry and a fingerprint sensor device cover structure, the cover structure having a first side configured to be touched by a finger, and a second side facing the sensing array, wherein the cover structure comprises conductive traces, arranged on the second side, for electrically connecting the fingerprint sensor module to external circuitry, and wherein a surface area of the cover structure is larger than a surface area of the sensor device. Moreover, the fingerprint sensor device comprises wire-bonds electrically connecting the connection pads of the fingerprint sensing device to the conductive traces of the cover structure.

A fingerprint sensor for incorporation into a smart card includes sensor electrodes for detecting fingerprint features of a finger placed on a contact surface, the sensor electrodes being disposed above a substrate layer that comprises a first portion, a second portion, and a ledge where an edge of the first portion extends beyond an edge of the second portion. Contact points disposed on the ledge connect the fingerprint sensor to electrical conductors of an intermediate layer of a multi-layer smartcard. The fingerprint sensor is disposed within a cavity formed in a body of the smartcard, and the contact points disposed on the ledge are set at a depth corresponding to the thickness of an outer layer covering the electrical conductors of the intermediate layer of the smartcard.

Various embodiments of RFID switch devices are disclosed herein. Such RFID switch devices advantageously enable manual activation/deactivation of the RF module. The RFID switch device may include a RF module with an integrated circuit adapted to ohmically connect to a substantially coplanar conductive trace pattern, as well as booster antenna for extending the operational range of the RFID device. The operational range of the RFID switch device may be extended when a region of the booster antenna overlaps a region of the conductive trace pattern on the RF module via inductive or capacitive coupling. The RFID switch device may further include a visual indicator displaying a first color if the RFID switch device is in an active state and/or a second color if the RFID switch device is in an inactive state.

A wearable device includes a first radio-frequency identification (RFID) tag, a second RFID tag, one or more feedback devices configured to provide feedback to a guest, and a microcontroller. The microcontroller is configured to generate a first control signal that causes a first type of feedback via the one or more feedback devices in response to interaction between electromagnetic radiation having a first frequency and the first RFID tag and to generate a second control signal that causes a second type of feedback via the one or more feedback devices in response to interaction between electromagnetic radiation having a second frequency and the second RFID tag.

A semiconductor device that can extend the range of adaptable sampling rate when performing analog/digital conversion is provided. The semiconductor device includes a plurality of sample-and-hold circuits storing an analog signal and a plurality of converter circuits having a function of converting the analog signal stored in the sample-and-hold circuit into a digital signal. The sample-and-hold circuit includes a switch and a capacitor that is supplied with an analog signal through the switch. The switch includes an oxide semiconductor in a channel formation region.

Techniques are described for powering a chip-enabled card using a wearable computing device. The chip-enabled card is paired with the wearable computing device and a specific signal is generated for the chip-enabled card. When the chip-enabled card is proximate to the wearable computing device, the wearable computing device transmits the specific signal associated with the chip-enabled card through a conducting element in contact with the user's body, through the user's body, and to a touch pad of the chip-enabled card that is also in contact with a portion of the user's body. According to the disclosed techniques, the chip of the chip-enabled card verifies that the received specific signal is associated with the chip-enabled card, and uses the verified specific signal to power subsequent transactions performed by the chip-enabled card. In this way, the chip-enabled card only emits a signal to perform transactions when the user is holding the card.

A device includes a first inductor and a second inductor. The first inductor has a first inductive coupling profile. A first circuit component is coupled to the first inductor. A second inductor has a second inductive coupling profile. A second circuit component coupled to the second inductor.

Various embodiments of RFID switch devices are disclosed herein. Such RFID switch devices advantageously enable manual activation/deactivation of the RF module. The RFID switch device may include a RF module with an integrated circuit adapted to ohmically connect to a substantially coplanar conductive trace pattern, as well as booster antenna for extending the operational range of the RFID device. The operational range of the RFID switch device may be extended when a region of the booster antenna overlaps a region of the conductive trace pattern on the RF module via inductive or capacitive coupling. The RFID switch device may further include a visual indicator displaying a first color if the RFID switch device is in an active state and/or a second color if the RFID switch device is in an inactive state.

A switchable radio-frequency identification (RFID) tag device comprising: a first RFID module positioned on a first plane; at least one un-tuned antenna section positioned on a second plane, wherein the first plane is positioned parallel to the second plane; a second RFID module positioned on the first plane; a third RFID module positioned on the first plane; and a sliding mechanism configured to move between a first position, a second position, and a third position; and wherein, in the first position, the first RFID module is coupled to the at least one un-tuned antenna section to form a tuned RFID tag, and the second and third RFID modules are detuned and/or inoperable; and in the second position, the second RFID module is coupled to the at least one un-tuned antenna section to form a tuned RFID tag, and the first RFID module and third RFID module are detuned and/or inoperable; and in the third position, the third RFID module is coupled to the at least one un-tuned antenna section to form a tuned RFID tag, and the first and second RFID modules are detuned and/or inoperable.