In espionage and secret agents .?

In espionage and secret agents,some agents hid little cameras inside the heels of their shoes...but does anyone know how little these cameras were?

In espionage and secret agents .?
Cameras are not hidden in shoes because they offer no proper viewing angle.





Their size is growing smaller as time goes bye... from huge cameras used in early 20th century (because of the lenses) to the little Minox of Japanese make in WW2 spying affairs. The minox could be held inside a palm of the hand and was installed in various containers like ladies bags, Brief Cases, front pockets of jackets etc.





Todays Cams are very small and store the pictures digitally (no film cassets and rolling engine or moving parts).





Still one must differ the cams used for short distance and documents and Scenary cams for long distance who need optical lenses of considerable size (diameter and length... still why not hide them in a car or motorbike or small plane ???
Reply:I am not certain of exactly which cameras that they used, but I remember in my days in covert investigations with Security Intelligence Agency (late '80's), we had full color cameras that went as small as the size of a dime... And that was before the newer electronic chip cameras were prevalent. The real challenge was in how to conceal the batteries and data storage. Today's micro cameras can get as small as just a few millimeters on their largest side. Battery technology has advaced exponentially, as well. Some power sources are only about the size of a grain of rice (they don't last long, though, say about a half hour). I still have access to some of these toys, too.

lilac