Interesting peice in Wired today about OCTV, some useful links.
http://www.wired.com/news/print/0,1294,42794,00.html
OCTV differs from CCTV in that it is wireless and uses the public GSM
network (mobile phones etc.) to transmit data. OCTV is, ahem, exciting(!)
because of the dramatic reduction in cost over CCTV installation.
Cheers,
Bob.
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