| 摘要 |
A data communication device for attachment to an object is provided having a flexible substrate, a transmitter adapted to transmit data in the form of electromagnetic radiation and a programmable memory. The device has a controller for controlling the transmission of the data and a programming means for programming the device. A power source for the device comprises a power storage device and a power extraction means capable of extracting power from the environment in which the data communication device is located when in use. A data communication system is also disclosed comprising the device and a reader for receiving electromagnetic radiation from the device. The reader includes a perceptive filter adapted to distinguish radiation received from the device from radiation received from other sources. |
