Why is Solomon called "the originator of snapshot"?

Salomon is good at using the small camera "Elmano" and Leica to capture or sneak shots of dignitaries and celebrities who are unprepared for the scene light, so as to get real and vivid reports. In order not to attract the attention of the subject, Solomon also invented a set of camouflage techniques: hiding the camera in a hat or handbag and opening the shutter with a hidden cable release. Through these methods, he took pictures that ordinary journalists could not take, and became the most famous photojournalist in Europe at that time. In 193 1, Salomon edited and published 170 photos of celebrities entitled "Celebrities in an Unknown Age". Solomon set a successful example for modern photo interview. The mode of "small camera+spotlight+snapshot" pioneered by him is still used by photographers all over the world, so it is recognized as the "originator of snapshot".