1. Consider key locks for windows easily accessible from the ground. 2. Under that scheme, one key locks a message, and a different key unlocks it. 3. :: I need to research, but my memory is that China introduced push-key locks . 4. _Stanford University uses a diverse system of key locks for the more than 200 buildings. 5. Mechanical key locks are vulnerable to bumping. 6. _Replacing thumb-turn window locks with key locks ; 7. Sometimes the ignition key locks up. 8. PGP uses a dual-key mechanism in which one key locks a message and a different key unlocks it. 9. Since that time its facilities have only consisted of a garden bench and an operator control for the key lock . 10. Along the Mississippi River, the Army Corps of Engineers has reopened some picnic and observation areas near key locks and dams.
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