| 摘要 |
<p>A ceramic key body (2) and an IC module (3) are provided. The key body has a head portion (2a) and an insert portion (2b) to insert into an electronic lock. The insert portion has a pit (4) formed therein, and the IC module is fitted into the pit. The IC module houses a semiconductor integrated circuit (6) constituting at least a microprocessor and a memory. Contacts (9) are formed on the surface of the IC module. The contacts are exposed to the outside of the insert portion. The key body 2 has a thickness of not less than 2.0 mm and not more than 5.0 mm. Memory data storage capacity is large, stored data can be reliably protected against external force, security quality is high, impact resistance is excellent, portability is excellent, and production is easy. The key body may be made of metal and coated with a ceramic layer. <IMAGE></p> |
