Patent ID: 8598989

Claim:
A method for disabling a tag device, the method performed by a mobile processor and comprising: transmitting, to a reading device, a reading command, the reading command instructing the reading device to inform an unique identifier of the tag device, the unique identifier identifying the tag device uniquely and the unique identifier having a variable length, wherein the reading device configures a reading response in response to the reading command, wherein the reading response includes a total length field, a first payload field, and a second payload field, the total length field specifying a total length of the first payload field and the second payload field, the first payload field having a fixed length, and the second payload field having a variable length, and wherein the unique identifier is inserted into the second payload field; receiving, from the reading device, the reading response including the unique identifier and a protocol control field; obtaining a unique identifier length by subtracting the fixed length from the total length, the unique identifier length specifying a length of the unique identifier; transmitting, to the reading device, a killing command for disabling the tag device, wherein the killing command comprises the unique identifier, the unique identifier length, an access password, a kill password, wherein the reading device obtains the unique identifier based on the unique identifier length, wherein the reading device detects the tag device to be disabled with the unique identifier, wherein the reading device accesses to the detected tag device with the access password, and wherein the reading device disables the accessed tag device with the kill password.