1. a pinhole spy camera 2. a 1"x2" display screen 3. a data possessor about as good as the one you would find in a blackberry or an iphone or any other phone or that sort
(im not actually making these things, i just need the costs)
(and no, im not getting these costs for a phone)
1x2" disp...dont know
processor, they are ASIC's (look it up) thus VERY VERY expensive to make 1, but VERY VERY cheep to make 1,000,000,000,000.
what you more want is a small computer like a PDA to cover processing and screen. otherwise you wont get it compatible
sorry i giv wrong addy it was .net
try this http://www.cctv.net/Super_Mini_Square_CCTV_Cameras_s/111.htm
probably around 5 bucks, w/o the light sensitive paper.