Do you know where your Social Security Card is?

Can anyone legally require you to present your SS card or force you to use your number as a means to identify you?
I thought I read somewhere that you don`t have to give out your number to most of the people who ask for it.

I seem to recall needing mine when I bought a home, and later when I refinanced the mortgage. It’s the original card I got in elementary/middle school and is a neat little snapshot of when my signature was once legible.