I dont want to carry my card with me, because it could get lost or something. I know my number by memory so i would like to know if i need to show my card or just give them my number What do you think? Tell me please thank you.
You should never carry your SS card around. It should be left in a safe place at home.
Memorize the number so you can add it to legal and government forms requiring it, but you should never have to show your card to an employment agency, potential employer, etc.
Almost never do you have to show your card.