| 摘要 |
<p>The security key (1) has two opposite-lying surfaces, which in the case of making of key copies, define the encompassing planes (2,3) which work in contact with an attached tensioning mechanism (8). An irreversible crushable detection projection (12) sits above the encompassing planes, in order to distinguish the use of the safety key from the unreliable manufacture of key copies.</p> |
