Determining the Path of a Wireless Tag

摘要

A device comprises a processor 31 for analysing signals dependent upon responses of at least two antennas 28 which are spaced apart to allow detection of a path taken by a wireless tag (25 Figure 1) when waved by a user. The processor is configured to determine the path of the wireless tag and to identify an instruction in dependence upon the path. The antennas may be spaced between 1cm and 10cm apart and may comprise a coil or loop. The device may also include a tag reader 30 and a multiplexer 29 and it may provide feedback to the user using either a light emitter 34 and/or a sound emitter 35. It may also transmit a signal to another device and provide feedback in response to a reply from the other device. The wireless tag maybe a Radio Frequency identity tag (RFID) or a near field communication device (NFC).