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Is cryptography the future of physical access control?

Most people don’t think much about opening doors: insert key, turn knob and walk in. If your workplace issues ID badges there may be a bit more thought that goes into it as you tap the badge on a sensor, hear the click and pull open the door.

But physical access systems are undergoing the most radical transformation since the switch from keys to cards and tumblers to electronics. To the end user very little should change–there may be an increase in the use of biometrics–but most individuals will still simply tap the ID and go.

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