Do Remotes for Car Locks emit magnatism?

Question

We use magnet key cards and one employee keeps having his deactived -- I noticed he puts it on the key ring with his car's remote.

Answer 1

No; car remotes typically use either radio frequencies or infrared outputs. Neither will generate a magnetic field.

CRT's (Tube TVs and monitors) and speakers both can create a magnetic field. If he likes to leave his keys on top of a TV, or a computer monitor, or a speaker, that might be causing the problem.