Wireless web-enabled door lock?

As you're using CQC and an Elk, you(or Kirk) could use that to pull together a few bits to do this.

IIRC, the cocoontech guys advocated using electric strikes in concert with an Elk M1 for something else I was looking into. Assuming that all works fine, and assuming that your CQC can activate/deactivate a particular item on the elk M1, then you could use CQC's web browser interface to expose a command button for the elk M1 which would deactivate/activate the electric door strike.

You could use a cellphone or any of a variety of interfaces to hit that browser.

You might find a standalone solution at this company:

true, interesting products there, but if I had a nice HA system like he's going to have, i'd want something that wasn't standalone, but rather designed to be integrated/controlled. That way if the front-door got unlocked somehow, i could trigger events/code up some rules as to what do do [if and only if the security is on, turn on the camera, SMS me on my cellphone, etc.].

Well, if you are talking about a PC (in the vicinity of a lock) that is connected to the web and has an available serial port, you could use one of our relay boards and our program HTTP232.

If no computer, just an ethernet to RS-232 converter with a relay board like on of ours or available from many compnies.