| 摘要 |
<p>A lock has tumblers (24) for operation by a key (25) and followers (28, 29; 38, 39) which engage the key and are moved by formations (26, 27) on the key during insertion of the key. Movement of the followers is sensed by electronic devices (34, 44) which provide signals to a microprocessor for identification of the key.</p> |
