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Elmue build a RFID electronic door lock using PN532 Controller, Vehicle Battery and Teensy 3.2 board.
The advantage of an electronic door lock is that the above security issues do not apply.
It is much better to have a safe door lock which prevents that the thief can enter than to have an alarm system which makes noise when the thief is already in. Until the police arrives he will be gone and probably some precious things will be missing. Secure locks are always better than alarm systems or cameras.
DIY electronic RFID Door Lock with Battery Backup – [Link]
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