The CIA had a camera that fit inside a pen and the pen still worked. Took a 8” X 11” picture while using your arms as the tripod. One old man in the states could load the camera and he suggested they find others to replace him. They tried and had a very hard time finding anyone that could do the job he was doing.
Maybe they should have recruited someone with small hands, just for that job. In fact, maybe they did...
“Carnies. Circus folk. Nomads, you know. Smell like cabbage. Small hands.” — Austin Powers, International Man of Mystery