Physical Access Control Project: Difference between revisions
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Wed, May 21, 2008: | |||
Last night, we started looking at the door in question, realized that it only had a handle-lock on it, and realized that we're going to need a wholly new locking mechanism to do anything useful/secure with -- so that's going to be project #1 in terms of serious implementation. | |||
''Added by Mark W, Thu, May 22, 2008:'' I think this is what you're looking for: [http://www.smarthome.com/5190s12.html Electric Door Strike] | |||
Elliot demo'ed his knock-code routine and got some useful feedback. Things like ambient noise and a relatively-long timeout period need improvement. | |||
Andrew suggested using a "Sonic Screwdriver" a la Doctor Who. This opens up all sorts of fun/funny code mechanisms. For instance, a keyfob with an ultrasonic speaker might be sweet. Or use LEDs and blink out a code string into a light sensor. And like the RFID scheme, we could have individual keys for individual peoples. | |||
Thoughts: Smart cards can offer some nice crypto, but they'd require the purchase of additional hardware ([http://www.smartcardsupply.com/Content/Hardware/AC-KIT.htm a kit]) and are more expensive than RFID (around $2.50) | |||
Another idea I had, and kinda like, is to have a computer connected to the internet and a SIP provider (as [http://onlineapps.newsvine.com/_news/2008/05/02/1466218-land-of-the-freeware-making-and-receiving-free-phone-calls-via-any-computer-or-internet-enabled-device-with-grandcentral noted] repeatedly, you can get free inbound calls via Google [http://grandcentral.com/ GrandCentral]). When a call is received, it could listen for an access code (prepend a few digits for user id if desired) --[[User:NikolasCo|NikolasCo]] 09:27, 28 May 2008 (UTC) | |||
how easy is it to forge phone number? because otherwise you could just have a database of member cellphones --[[phf]] | |||
pretty easy with asterisk and a voip provider. --[[markw]] | |||
Revision as of 16:59, 5 June 2008
Wed, May 21, 2008:
Last night, we started looking at the door in question, realized that it only had a handle-lock on it, and realized that we're going to need a wholly new locking mechanism to do anything useful/secure with -- so that's going to be project #1 in terms of serious implementation.
Added by Mark W, Thu, May 22, 2008: I think this is what you're looking for: Electric Door Strike
Elliot demo'ed his knock-code routine and got some useful feedback. Things like ambient noise and a relatively-long timeout period need improvement.
Andrew suggested using a "Sonic Screwdriver" a la Doctor Who. This opens up all sorts of fun/funny code mechanisms. For instance, a keyfob with an ultrasonic speaker might be sweet. Or use LEDs and blink out a code string into a light sensor. And like the RFID scheme, we could have individual keys for individual peoples.
Thoughts: Smart cards can offer some nice crypto, but they'd require the purchase of additional hardware (a kit) and are more expensive than RFID (around $2.50)
Another idea I had, and kinda like, is to have a computer connected to the internet and a SIP provider (as noted repeatedly, you can get free inbound calls via Google GrandCentral). When a call is received, it could listen for an access code (prepend a few digits for user id if desired) --NikolasCo 09:27, 28 May 2008 (UTC)
how easy is it to forge phone number? because otherwise you could just have a database of member cellphones --phf
pretty easy with asterisk and a voip provider. --markw