A card reader tampering detector includes at least one sensor and a detector circuit coupled to the sensor(s). The detector circuit is configured to receive a sensor output from the sensor(s) when the sensor is inserted into a smartcard reader. The detector circuit is further configured to detect, from the sensor output, the presence of an unauthorized device within the smartcard reader, and provide an output signal indicative of the presence of the unauthorized device within the smartcard reader.

A system for protecting personal data contained on an RFID-enabled device, suitable for use with an RFID system including an RFID reader configured to extract information from an RFID chip associated with the RFID-enabled device, includes a personal data protection system including a personal data protection device configured to prevent reading of the RFID chip associated with an RFID-enabled personal item.

The present disclosure provides a method for radio frequency interference processing, comprising acquiring a first signal strength value of the first radio frequency antenna; determining whether the first signal strength value is lower than a preset threshold; and stopping the information display on the first area when the first signal strength value is lower than the preset threshold. The method reduces the interference from display components to radio frequency components, improve the efficiency of radio frequency communication.

A jamming radio signal is outputted to interfere with an interrogation signal emitted by a vehicle for verifying a tag of a vehicle key that provides access to the vehicle. An access signal including access data is received. The output of the jamming radio signal is halted, at least temporarily, when the access data matches an access code so that the tag of the vehicle key can be authenticated.

An assembly of a standard RFID/NFC element and a scrambling element for outputting wireless noise in response to a wireless request signal from a terminal, such as NFC, RFID or the like. The scrambling element has a noise generating circuit and an antenna for receiving the request signal and outputting a voltage. The scrambling element further comprises a voltage increasing element receiving the voltage from the antenna and feeding a higher voltage to the circuit to have the circuit start operation faster than the circuit of the standard RFID/NFC element.

A system for protecting personal data contained on an RFID-enabled device, suitable for use with an RFID system including an RFID reader configured to extract information from an RFID chip associated with the RFID-enabled device, includes a personal data protection system including a personal data protection device configured to prevent reading of the RFID chip associated with an RFID-enabled personal item.

A system for near field communications is provided. The system can include a near field generator configured to generate a near field detectable signal comprising information. The system can include a near field detector configured to receive the near field detectable signal and output the information. The system can include an Electro-Magnetic (EM) shield surrounding the near field generator to block EM radio frequency (RF) signals in the vicinity of the near field generator from interfering with operations of the near field generator. The EM shield does not prevent communication of the near field detectable signal between the near field generator and the near field detector. The EM shield can be configured to reduce magnetic field loss from eddy currents in the EM shield as the near field detectable signal passes through the EM shield.

The present disclosure provides a method for radio frequency interference processing, comprising acquiring a first signal strength value of the first radio frequency antenna; determining whether the first signal strength value is lower than a preset threshold; and stopping the information display on the first area when the first signal strength value is lower than the preset threshold. The method reduces the interference from display components to radio frequency components, improve the efficiency of radio frequency communication.

Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

Devices and methods of disrupting data transfer between an RFID interrogation device (50, 50) and an RFID data storage device (30, 30) to be protected, are provided. An example of an embodiment of an RFID signal disruptor device includes a container (41, 141) and an RFID signal disruptor circuit (151, 161, 161, 171, 171, 271, 271) configured to substantially disrupt the signal provided by the RFID interrogation device (50, 50) when the RFID signal disruptor device is positioned to protect the RFID data storage device (30, 30). The RFID signal disruptor device can also include an interrogation indicator (63, 296) configured to indicate to a user of the RFID data storage device (30, 30) that an unauthorized RFID interrogation device (50, 50) is attempting to interrogate the RFID data storage device (30, 30) when the RFID signal disruptor device is positioned in close proximity to the RFID data storage device (30, 30) to provide protection thereto and when the RFID interrogation device (50, 50) is producing the interrogation signal.