| 摘要 |
A networked card for identifying and tracking animate and inanimate objects and personnel, the card including: a radio frequency modem operable at a low radio frequency not exceeding one megahertz, the modem including a full duplex transmitter and receiver; a loop antenna operatively coupled with the radio frequency modem, the antenna operable within a range of hundreds of feet; a programmable microprocessor operatively coupled with the radio frequency modem and fully programmable within a network; a memory operatively coupled with the programmable microprocessor, the memory holding identification data; and a battery for providing power to the microprocessor. |
