WIRELESS COMMUNICATION DEVICES, WIRELESS COMMUNICATION SYSTEMS, COMMUNICATION METHODS, METHODS OF FORMING RADIO FREQUENCY IDENTIFICATION DEVICES, METHODS OF TESTING WIRELESS COMMUNICATION OPERATIONS, RADIO FREQUENCY IDENTIFICATION DEVICES, AND METHODS OF FORMING RADIO FREQUENCY IDENTIFICATION DEVICES

摘要

This invention provides radio frequency identification devices, wireless communication systems, communication methods, methods of forming a radio frequency identification device, methods of testing wireless communication operations, and methods of determining a communication range. According to a first aspect, a radio frequency identification device includes a substrate; communication circuitry coupled with the substrate and configured to at least one of receive wireless signals and communicate wireless signals; and indication circuitry coupled with the communication circuitry and configured to indicate operation of the radio frequency identification device. A communication method according to another aspect includes providing a radio frequency identification device including indication circuitry; receiving a wireless signal within the radio frequency identification device; and indicating operation of the radio frequency identification device using the indication circuitry after the receiving.