David wrote:
I would like to install an alarm in a new workshop and have come across
a system using gsm whereby a signal is sent to a mobile phone as an
alert. Any comments or help please ?

there are webcams and software that capture an image of any motion
in a given area, emil the picture to your phone or FTP the images to a
remote site. you could quite easily set up HTTP streaming to the web
and check in using a mobile phone or suitably equiped PDA

see http://www.grisby.org/burglar.html

and http://www.nimisis.com/projects/mugshot.php


HtH


RT