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What best describes the impression technique?

  1. A method of estimating the age of a lock

  2. A means to fit a key by manipulating a blank in the keyway

  3. A technique used solely for electronic locks

  4. A method of troubleshooting lock issues

The correct answer is: A means to fit a key by manipulating a blank in the keyway

The impression technique is best described as a means to fit a key by manipulating a blank in the keyway. This technique involves inserting a blank key into the lock and then applying pressure while turning the key. As the key is turned, the pins inside the lock are pushed up against the blank, leaving impressions on it. These impressions correspond to the depth of each pin when the lock is in the open position, allowing the locksmith to determine the correct cuts that need to be made to create a functioning key. This method is particularly useful for creating keys without having access to an original or duplicate key. It emphasizes the skill of the locksmith, as they must be able to accurately read the impressions and make precise cuts on the key blank accordingly. While the other options mention techniques or methods that are irrelevant to the impression technique, understanding this specific process is crucial for locksmiths to effectively and efficiently create functional keys for various locking mechanisms.