Ubuntu webcam based security system?

[munchi3s]

Well, I manage a computer lab for the school that is subject to thievery(Monitors and a tablet PC so far.), and I wanted to try and install two to four webcams in each corner of the room to monitor the room. The room is roughly 28' x 48'. I would like suggestions for webcams that I should buy and an Ubuntu server that houses the video or pictures and I want it to tape continuously or take a picture every 30 seconds or so to help protect the room from thievery. Or take video from 8:00 AM to 3:30 PM.
Does anyone know of software for ubuntu server that could do this? Also what kind of webcam should I buy?

Thanks for all your responses.

-Munchi3s

(I don't really know if this belongs in security or not, but I guess it's all in the interpretation of the word "security")

[ld.4lpha]

Looks like there are a few options to choose from. I've not used any, so I can't attest for one over another.

http://www.google.com/search?hl=en&q=security%20camera%20ubuntu

LD

[Mister.Vash]

Take a look at zoneminder

http://www.zoneminder.com/

[movieman]

Yeah, I use zoneminder with an Airlink network webcam (forget the number). I don't know whether it's as configurable as you were looking for, but you can at least configure perpetual recording with defined frame rate, motion detection, etc.

[HermanAB]

Howdy,

Most webcams will work. Buy one at a time and try it.

You should also look at a program called 'motion'.