Active
- Prevents any unauthorized access to objects
- Includes mechanisms for memory protection
Passive
- Prevents the unauthorized disclosure of information
- Includes the use of cryptographic techniques
Attach a shut-off wrench to a cord near the shut-off valve.
A key device that can be used to disable a using one turn of a master key to change a lock.
A key device that contains a built-in microprocessor, microcomputer, and key-exchange data.
Notifications