Patent ID: 7210626

Claim:
A wireless tag information management device, comprising: management objects having attached thereto wireless tags; a storage unit for storing the management objects by a storage number determined in advance; a reader/writer unit for radiating an electric wave to the management objects stored in the storage unit to read out information of the wireless tags; and an electric wave control unit for, when the number of the management objects having attached thereto the wireless tags whose information is read out by the reader/writer unit gets to the storage number determined in advance, suspending radiation of the electric wave from the reader/writer unit, wherein the electric wave control unit has a counter for reading out the storage number determined in advance, and, in case a determination made that the counter value is one or more, information of the wireless tags is read out by the reader/writer unit, the counter is decremented by one, returning to the counter judgment, while in case a determination made that the counter value is zero or less, radiation of electric wave by the reader/writer unit is suspended.