At least some embodiments are directed to a dynamic card. The dynamic card transmits a first temporary card identification number to a computing device. The dynamic card is without an internal power source and is powered up by an external power source housed within the computing device. The dynamic card determines an absence of unused encrypted card identification numbers and receives a set of encrypted card identification numbers from a server. The dynamic card decrypts a second temporary card identification number from the encrypted card identification numbers and shows the second temporary card identification number on a display, replacing the first temporary card identification number. The second temporary card identification number remains shown on the display after the power from the external power source is discontinued. The second temporary card identification number can be used in a subsequent interaction with another computing device.

A first element and a second element of a same device communicate with each other. The first element sends the second element a first piece of information representative of energy supplied by an electromagnetic field supplying power the device. The second element adapts its operating frequency as a function of the first piece of information.

A system and method for method for testing an energy harvesting tag, comprising: transmitting a harvesting signal to an energy harvesting tag at time T.sub.1; receiving a response signal from the energy harvesting tag at time T.sub.2; determining a capacitor charging time of the energy harvesting tag as a difference between T.sub.2 and T.sub.1; and assigning a pass value to the energy harvesting tag when the capacitor charging time is less than a predetermined threshold amount.

A magnetic tape cartridge unit includes a plurality of magnetic tape cartridges stacked in a height direction. Each magnetic tape cartridge includes an antenna coil formed in a substrate, a communication circuit that communicates with a communicatee using power induced by application of a magnetic field from the communicatee to the antenna coil, and a case having a reference plane being a reference in a height direction. The substrate is inclined at an inclination angle of less than 45 degrees with respect to the reference plane. In a case where the plurality of magnetic tape cartridges are stacked in a predetermined orientation in the height direction, the reference planes of the plurality of magnetic tape cartridges are in parallel, and the inclination angles of the substrates relative to the reference planes and positions of the substrates in the reference planes conform among the plurality of magnetic tape cartridges.

A wearable electronic device includes a watch body including a touch-sensitive display configured to receive a first input and a first wireless circuit configured to receive a wireless input signal. The wearable electronic device further includes a band coupled to the watch body and configured to attach the watch body to a user and a wireless module coupled to the band and including an input device configured to receive a second input and a second wireless circuit configured to transmit the wireless input signal to the first wireless circuit in response to receiving the second input.

According to one embodiment, a semiconductor storage device includes a first loop antenna, a second loop antenna, and a controller. The first loop antenna generates a second magnetic field on the basis of electromagnetic induction according to a first magnetic field. The second loop antenna generates an induced electromotive force on the basis of electromagnetic induction according to the second magnetic field. The controller is operable on the basis of the induced electromotive force generated in the second loop antenna, and performs communication with respect to a first external device generating the first magnetic field, through the second loop antenna.

Embodiments of the present disclosure generally relate to a wireless identification tag for association with a product to enable product self-identification and system and methods for use thereof. In one implementation, the tag may include at least one antenna tuned to receive energy transmitted at one or more frequencies within certain frequency bands. The tag may also include at least one transmitter that may be configured to send at least one identification signal. The tag may also include at least one circuit. The at least one circuit may be configured to detect whether energy is received in a certain frequency band, and to cause the at least one transmitter to operate in a mode corresponding to the certain frequency band.

Embodiments of the present disclosure generally relate to an appliance for holding electronically tagged products and for recording an association between the tagged products and the appliance, and system and methods for use thereof. In one implementation, the appliance may include a housing defining a cavity for retaining the electronically tagged products. The appliance may also include an exciter integrated with the housing and configured to trigger tags of the products to cause the tag of each product to transmit a unique tag ID. The appliance may also include a receiver for receiving transmission of each unique tag ID. The appliance may also include a communicator for outputting indications of identities of electronically tagged products retained in the cavity.

A hybrid document includes a flexible document having visible markings. One or more light-controlling elements and a controller are embedded in or on the flexible document. The controller is electrically connected to the one or more light-controlling elements to control the one or more light-controlling elements. A power input connection is electrically connected to the controller, or one or more light-controlling elements, or both. A power source can be connected to the power input connection, for example a piezoelectric or photovoltaic power source. In response to applied power, the controller causes the one or more light-controlling elements to emit light. In some embodiments, the controller includes a memory and a value can be stored in the memory and displayed by the light-controlling element(s). In some embodiments, the value can be assigned or varied by a hybrid currency teller machine.

Systems and methods for executing transactions with increased transactional efficiency and security via a smart payment instrument with self-contained transaction architecture are provided. Methods may include receiving information via a tactile sensor that is affixed to the instrument. Information may include a series of alphanumeric symbols. The receiving may be achieved by entering the symbols via the tactile sensor. Methods may include deciphering the information, via a payment interface component of the instrument, to generate payment data. Payment data may include a recipient and a payment amount. Methods may include transmitting to a payment gateway, via a wireless communication element embedded in the instrument, a request to execute a payment based on the payment data.