| 摘要 |
<p>PT--78908 A The tag circuit has at least one resonant frequency and is sensed and electronically deactiveted to destroy the resonant characteristics at the detection frequency. The circuit is electronically deactivated by a breakdown mechanism operative to cause vaporisation of a conductive area or short-circuiting of capacitor plates. - A deactivator provides electromagnetic energy at a resonant frequency of the circuit of sufficient energy to cause electrical breakdown and deactivation of the circuit.</p> |
