Frank Best was a high school custodian entrusted with maintaining a large high school in Washington state. Every day, he carried a key ring with 100 keys on it—one key for every door. Whenever a key was lost, he had to rekey the entire lock. He was convinced there had to be a better way, and experimented for seven years until he found it. The result was the first small format interchangeable core and the foundation of today’s industry approach to masterkeying. Little did he know at the time that his invention would completely transform the lock industry.
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