A wireless signal device is provided. The wireless signal device includes a device body, a fastening belt, a wireless signal module and a switch unit. The device body includes a through hole. A fixed end of the fastening belt is affixed to the device body, and a free end of the fastening belt is adapted to be inserted into the through hole. The wireless signal module is disposed in the device body. The switch unit is disposed in the device body, wherein in a signal transmission mode, the fastening belt passes through the through hole, and the switch unit is pressed by the fastening belt to activate the wireless signal module.

In this patent disclosure, various embodiments of using near-field communication (NFC) to facilitate the transfer of data and power between a robotic surgical system and a surgical tool attached to the robotic surgical system are disclosed. In one aspect, a process for automatically managing surgical tool attachment in a robotic surgical system can begin by detecting an attachment of a surgical tool. The process next establishes a secure near-field communication (NFC) link between a first NFC module embedded in the robotic surgical system and a second NFC module embedded in the surgical tool. Next, the process requests tool calibration data from the surgical tool via the secure NFC link. The process subsequently uses the received tool calibration data to initialize the surgical tool so that the surgical tool is ready for use.

A luggage tag includes an electronic ink display screen affixed to a surface of the luggage tag. Tag memory of the tag stores a unique identifier. An antenna receives an electromagnetic signal. Circuitry of the tag captures energy and acquires data from the electromagnetic signal received by the antenna and powers the electronic ink display with the captured energy. A processor receives the data acquired by the circuitry from the electromagnetic signal and produces an image on the electronic ink display using the acquired data if the acquired data includes a match to the unique identifier stored in the memory.

Systems and methods are described for low power radio devices. A first radio-based computing devices emits wireless power signals which are received by a plurality of second radio-based devices. A sensor controller of the one or more second radio-based devices determines if an interrupt signal is to be transmitted to an associated at rest microcontroller, to cause the microcontroller to prepare to receive or emit a radio information signal.

A radio frequency identification communication method for collision reduction with low power consumption and radio frequency identification communication system using the same are provided in the present invention. The radio frequency identification communication method includes the steps of: setting different delay periods according to different RFID tags; in each preset time, enabling a RFID reader and detecting whether a RFID tag is on the RFID reader; detecting whether there is only one RFID tag on the RFID reader; when two or more RFID tags on the RFID reader are detected in a specific time slot, entering a suspend mode to stop providing RF power such that the RFID tags perform power on reset when the reader is enabled next time.

A wireless tag includes a main body comprising an embedded wireless transducing circuit. coupled to a parallel arrangement of resistive loops embedded in respective tabs extending from the main body of the wireless tag. The wireless transducing circuit includes a globally unique identifier, a battery, a processor, a memory comprising processor-readable instructions, and a wireless communications interface; and a wake circuit configured to turn-on in response to an open circuit occurring in in a respective tab. The wireless transducing circuit is configured to turn on responsive to the wake circuit receiving a voltage level above a threshold.

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.

An RFID loss-prevention system (LPS) may monitor RFID-tagged items in a facility. An RFID reader transmits a first inventory command configured to cause tags in a first state to respond, receive a reply from a first tag, determine that the first tag has a low transition risk, and cause the first tag to switch to a second state. The reader may also receive a reply from a second tag, determine that the second tag has a high transition risk, and cause the second tag to remain in the first state. The reader may then transmit a second inventory command configured to cause tags in the first state to respond, receive a reply from the second tag in response to the second inventory command, determine that the second tag has inappropriately exited the facility, and issue an alert.

Methods for detecting electronics amongst a plurality of recycling materials.