does anyone know anything about medeco sitekeys?

does the words "access control" mean anything to ya ? they should... think about it...

red flags everywhere

Life is a bitch ain't it - almost as bad as having to go thru a magnetometer to get on a plane!

Second point first. It's not "pointless" access control if it does what the OWNERS/MANAEGMENT of the building wants. If you lock the drawer in your desk, but don't store anything of value there, a third party may deem it pointless. You, on the other hand will be greatly upset if someone routinely opens that lock, even if they do no damage and steal nothing.

Maybe they want to avoid traffic through a spacific corridor that was too noisy for the occupants of that area. Maybe there's a fire-safety rule that regulates what passaages are open. It's even possible that they just want to discourage running through a straight path at top speed. Most likely they want to route people past a guard station or camera for security purposes.

Try asking the management why it's the way it is and you may be suprised. We know, of course that YOU would never steal anything or smuggle anything in or out. Oh. Wait. You already said that you want to filch or fake a key, showing that you have a propensity to disregard rules.

Now, as to the two contact chip: Dallas Semi has (quite ingeniously) designed a series of chips with a two wire bus. In essence, voltage is applied which charges a capaciter which then powers the device long enough to respond to a few read/write cycles. I have several devices using that design.

Sincerely,

Daniel

From your perspective. Obviously not from that of the person who implemented the access control.

It's hardly as though someone who wanted to break in somewhere would say: Listen I really need to break into this place to steal some stuff, can you tell me how to.........

If this were so easy I would wager you would have already done it to avoid the inconvenience of the long walk to your room.

Well - first of all - the keys seperate the male and female wings of the dorm after two 2am. Annoyingly enough - this system sometimes messes up and won't let you through a door during an allowed time in the middle of the day. It's a major annoyance :( Do you know if the system uses a rolling code or a static code (hopefully those are the right terms - what I mean is does it just give a simple code - or is it something more complicated than that? If it was just a simple code

- I could probably figure out the code with a oscilliscope and then replicate it with an AVR (8 bit uC).

What 'Michael' may not know is that the campus locksmiths have been following this thread and are probably laughing their heads off.

I got a campus locksmith that I go visit with now and then, some of the tales he tells, are so out there, that no one would believe them...

--Shiva--