Patent ID: 7522055

Claim:
A method for testing a column of radio frequency identification (RFID) straps, wherein an RFID strap in the column of RFID straps comprises: an RFID chip on a continuous web material; and a pair of electrical contacts on the continuous web material coupled to the RFID chip, the method comprising: transmitting a test signal from an RFID tester to the electrical contacts of at least one strap of the column of straps on the continuous web material, the column being oriented parallel to a transport direction of the continuous web material and having at least 35 straps; detecting for a return signal from the at least one strap, the return signal having less power than the test signal; and if the detecting for the return signal indicates the at least one strap is defective, then marking with a mark on an electrical contact of the at least one strap, wherein a frequency of the test signal is between 902 MHz and 928 MHz.