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Author
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Topic: Mechanical keyless locks
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Randy Stankey
Film God
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Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99
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posted 03-04-2013 09:53 PM
Some hotel locks are battery powered.
When I worked as a hotel security guard, the locks there were battery powered with no external connections at all. They worked the same way your car's keyless fob works.
The car's processor has a many-digit code number that increments by a set pattern each time it receives a signal from the fob. The fob increments the code by the same pattern each time the button is pressed. If the codes match, the car opens.
In a hotel lock the code gets incremented when the room inspectress puts her card in the lock as she checks the room into service each day. When you check in to the room at the front desk, the clerk's computer synchronizes your key card with a particular room and ads a certain number of increments which corresponds to the number of days you plan to stay.
At the end of 'n' days (updates from the inspectress's card) your room card and the lock on the door go out of sync and the door won't open.
The Rooms Manager and the security guard on duty also have keys that can resync or unsync the lock.
If the room is to be locked (e.g. the guest doesn't pay) the manager or the security guard can put their "Red Card" into the lock and immediately uncync it. When the room is to be opened again, he puts his Red Card into the lock, immediately followed by the guest's card, then the room is accessible again.
As a security guard, I spent seemingly endless hours going up to guests' rooms to resync keys. We had to check the guest's ID, take the card down to the front desk then come back to sync it up again with the Red Card.
That was 20 years ago. Nowadays, many locks are networked to the computer at the front desk. Resyncing is probably a thing of the past.
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Joe Elliott
Master Film Handler
Posts: 497
From: Port Orange, Fl USA
Registered: Oct 2006
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posted 03-04-2013 11:11 PM
You could mod it so you can use your phone.
Bluetooth Garage door hack.
Sears has a garage door opener that you can not only use your phone, but you could open it via internet if you needed too. (Someone stops by to pick up or drop off something important, and you are not home. They could call you and you could open it.) However, that would necessitate replacing the entire unit, but I personally would like this option if it were for a business.
Craftsman Garage door openers.
And also, a modification of a motorcyle unit.
Flas h2pass garage door opener.
Interesting why the BBS code on here puts a space between the s and the h, it is not that way in the HTML code. Things that make you go Hmmm . . .
Mechanical sounds easier, but when I lived in Kansas City, the mechanical lock would freeze up in cold weather, and you would have to warm it up, or remember to blast it with a lot of graphite before it got cold. It had a metal casing, which water would condensate on, so perhaps a plastic unit might do better? The coldest I ever remember it getting was -10. I could not imagine it being -40 to -60. You know there are warmer places to live. Silly Canadians.
With the electronics, it is more complicated, but they are all inside where it is at least warmer.
Sorry, living in cold climates just reminds me of Sam Kinison talking about people living in deserts . . .
Sam Kinison on world hunger . . . relevant at 1 min in.
Sorry, cold weather makes me cranky. I live in sunny Florida, and it is cold down here right now. It's been getting down to 35 at night, and you can't even go lay out at the beach till about 11:00. It's horrible.
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