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RFID door lock
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== Door Hardware == Generally, it seems like a good idea to keep normal door operation the same once the unlocking system installed. Doors have been slowly engineered over the years and work very well in the case of crowds, fires, etc. Electric strike works well for this, additional actuation also as long as it doesn't '''require''' that it be used to get in our out. Electric Strike: [[File:Electric_strike.jpg]] * Electric door strike ** we have one but from our tests it will not work on the outside door. Great for door to studio. (how electric strike operates: http://www.youtube.com/watch?v=h7lCiQ6IP4I) * Electromagnetic lock ** requires a battery backup incase power goes out ** requires a button to be pressed to exit (This could be a motion sensor, with the button just as a backup) *** ''motion sensors are too easy to fool with changes in light / shade which would be major problem in the gallery space'' - [[User:Abachman|Abachman]] * Servo/other-motor actuated ** for bar-style door (http://shrten.com/424), a servo motor would keep the door function the same but allow you to trigger opening from outside. servo force would need to be pretty decent to push the bar in. $75-$110 would buy a hefty enough servo (http://www.servocity.com/html/hsr-5498sg_servo.html). there's also a potential for very clever solution possibly involving a counter weight, some gearing, etc.
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