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2. Time-delay combination locks - Wikipedia

   en.wikipedia.org/wiki/Time-delay_combination_locks

   This will allow the safe to be opened when the batteries are changed after the pre-set time if the correct code is entered. Some electronic combination locks with a time-delay feature require the code to be entered twice: once to start the timer, and a second to unlock and open the safe entered after the delay period has expired.

3. VingCard Elsafe - Wikipedia

   en.wikipedia.org/wiki/VingCard_Elsafe

   VingCard Elsafe, whose origin was in Moss, Norway, is an international producer of hotel locking systems, electronic in-room safes and energy management systems.After inventing the first mechanical hole card operated lock in 1976, VingCard was acquired in 1994 by ASSA ABLOY, and merged with the electronic safe producer Elsafe [2] to form VingCard Elsafe in 2006.

4. Bernard Marshall Gordon - Wikipedia

   en.wikipedia.org/wiki/Bernard_Marshall_Gordon

   In 1953, Gordon and Joseph H. Davis co-founded EPSCO, Inc. to manufacture a variety of electronic components and subassemblies. While at EPSCO, in 1953–54, Gordon created high-precision and high-speed signal processing, including the core technologies of analog-to-digital conversion. These developments were fundamental to the subsequent ...

5. Electronic lock - Wikipedia

   en.wikipedia.org/wiki/Electronic_lock

   A quick demonstration of an electronic door lock. An electronic lock (or electric lock) is a locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock.

6. Smart lock - Wikipedia

   en.wikipedia.org/wiki/Smart_lock

   Electronic keypad lock. A smart lock is an electromechanical lock that is designed to perform locking and unlocking operations on a door when it receives a prompt via an electronic keypad, biometric sensor, access card, Bluetooth, or Wi-FI from a registered mobile device. These locks are called smart locks because they use advanced technology ...

7. Safe-cracking - Wikipedia

   en.wikipedia.org/wiki/Safe-cracking

   The combinations for some electronic locks can be retrieved by examining electromagnetic emissions coming from the lock. Because of this, many safe locks used to protect critical infrastructure are tested and certified to resist TEMPEST attacks. These include the Kaba Mas X-10 and S&G 2740B, which are FF-L-2740B compliant.