When they came up with Scanners?

Question

Didn't that make it really easy to become someone else?

If you wanted too

Answer 1

Digital imaging, although a relative modern topic, can be traced back a few decades. It all began 1950.

The 1950's
Scientist Russel A. Kirsch and his colleagues, working at the National Bureau of Standards in the mid-1950's, constructed a simple mechanical drum scanner and used it to trace variations of intensity over the surfaces of photographs. By the year 1957 heralded the first ever scanned photo.

You could check a summary of the key events that were a part of the evolution of the process of digital imaging in this site:
http://www.there.co.nz/414/history.html.