What did Nazi camp administrators do to identify people from different groups in the concentration camps?

2 Answers
Aug 7, 2016

They used different colours of emblems.

Explanation:

The most well known is the yellow Star of David worn by the Jews. However there were emblems of different colours for Jehovah's witnesses, Freemasons, and homosexuals amongst others.

Aug 7, 2016

Also Numbers
Each Camp had a punch card machine to handle database queries.
Longer term prisoners were kept for their skills and the punch card system helped effectively use them.

Explanation:

https://en.wikipedia.org/wiki/IBM_and_the_Holocaust

The book brings to light many controversial aspects of the use of Punch Card Technology during the War. Its accusations against IBM have not been resolved.