very interesting, although you could have posted the trendmap earlier as I would have enjoyed looking to see if there anything local out there...
are the proper stuff like heitel secured any better ?
using the magic of google
http://paxton.co.uk/Forum/yaf_postst55_-Open-Door--desktop-application--Free.aspx
(I have no idea whether its the same as the OP's)
I thought the point of using door contacts is to ensure the site is secured before the sub leaves ?
eg-- leave stock in the door way & return to nab once everyones gone home ?
Being the cynic....
I suspect a nice mediocre white collar carrer will bring greater rewards with little risk & none of the hassle of being self empployed in this industry ?