[hackerspaces] Shop Access Control System

Tim Krabec tkrabec at gmail.com
Fri Aug 14 20:41:56 CEST 2009

why not outfit the door with en electric strikeplate, so a physical key
would override that.

On Fri, Aug 14, 2009 at 2:34 PM, john arclight <arclight at gmail.com> wrote:

> So after some more research, I think I've solved 2 more problems:
> 1. There is a company out of Hong Kong on eBay that has Wiegand-26 readers
> and keypads at a very reasonable price.  I picked up 3 readers and about 50
> tokens for around US$100 shipped.  Will let everyone know how well it works
> out.  They even have a keypad+RFID+fingerprint reader for aorund US$129.
> 2. For the door hardware, there is a simpler way to secure it.  We got a
> large electromagnet that can be fitted to the inside of the door without
> much modification.  The problem with this hardware is that we could lock
> ourselves out if the system glitches, and we also keep the
> landlord/maintenance guy out who sometimes fixes things.
> Apparently, some security installers get around this by installing a micro
> switch or a mercury switch inside the door, so that turning the  key
> deactivates the door holding relay.  There are commercial kits for this or
> we can do DIY.  I believe this would also preserve the deadbolt in the door,
> so that we can also use the key to secure it if something is broken.
> Will let everyone know how it goes.  Our ultimate goal is to be able to
> give out a code or key to permanent key holders, 1-day users, and even
> one-time open requests.  Also, we will have a web portal and SMS
> notification of alarms and a list of who is likely at the shop if we want to
> stop by and hang out.
> Arclight
> On Thu, Aug 13, 2009 at 3:11 PM, john arclight <arclight at gmail.com> wrote:
>> Til,
>> I agree with you on the door hardware.  Most industrial/office spaces use
>> commercial mortise hardware which is not like the normal residence
>> deadbolt.  One solution is the eletromagnet lock, although this requires
>> about 200ma continuous power and is ahrd to override in case of failure or
>> if the landlord needs to get in.
>> We found a solution that does not require modification.  It re-uses the
>> existing door lock cylinder, but adds a solenoid actuator.  It's designed
>> for retrofit and fits in the space occupied by the old hardware, so it's
>> easily removed if you move out.
>> Check out:
>> http://www.sdcsecurity.com/mngmoc.aspx?id=57
>> It appears that these are available to work with many common brands of
>> lock cylinder.
>> Arclight
>> On Thu, Aug 13, 2009 at 12:14 PM, Tilman Frosch <til at das-labor.org>wrote:
>>> Am Donnerstag, den 13.08.2009, 13:30 -0400 schrieb Tim Krabec:
>>> > I read that das-labor has a usb based entry
>>> > system(https://www.das-labor.org/wiki/AnonAccess/en) they appear to be
>>> > down
>>> AnonAccess is to be used with i2c-capable chipcards, actually. We do not
>>> use the system at our space right now, as a quality lock was the more
>>> pragmatic solution. Main reason is that an electronic entry system
>>> requires some modifications to the door and frame, which our lessor
>>> wouldn't be too happy about. Next to that with every entry system you
>>> need some solution to override it in case of emergency, which is also
>>> not trivial in our current space.
>>> The website should be back up soon, hopefully.
>>> Til
>>> _______________________________________________
>>> Discuss mailing list
>>> Discuss at lists.hackerspaces.org
>>> http://lists.hackerspaces.org/mailman/listinfo/discuss
> _______________________________________________
> Discuss mailing list
> Discuss at lists.hackerspaces.org
> http://lists.hackerspaces.org/mailman/listinfo/discuss

Tim Krabec
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.hackerspaces.org/pipermail/discuss/attachments/20090814/a6c2f5c2/attachment.htm 

More information about the Discuss mailing list