| 摘要 |
An integrated RFID reader and tag can both respond to an RF reader device (in tag emulation mode) and also read a RF tag (in reader mode). An embodiment of the invention describes the use within a larger device (e.g. mobile telephone, PDA, vending machines). In this way the device can operate as both an RF reader and as a tag in the vicinity of other RF readers. Examples are a vending machine that operates in a reader mode to track items that are purchased from the machine, and to operate as a tag when the owner of the vending machine wishes to download purchasing data. |
