How to Truncate people's names on Public Display?

1. What is name truncation?
2. What does truncate mean?

What is name truncation?

Then we usually know it's truncated. Sometimes it's cut off between characters and sometimes a character is cut off so it looks like another character, but usually it's clear that it's cut off, and then we know we're not seeing the full and proper name.

What does truncate mean?

ˈtrən- truncated; truncating. transitive verb. : to shorten by or as if by cutting off.