Most of us saved Dad as “Dad” and a friend as “Bestie” — and never really memorized anybody’s phone number.
Lose the phone, smash it, or let the battery run out, and you can’t borrow another phone to call them. You don’t have the number.
IDK Card is a durable, credit-card-size card for your wallet. The real names and numbers you choose, printed and mailed to you.
If the phone is gone, the card is still in your pocket.
This is not a medical ID. It is not a substitute for an “In Case of Emergency” contact in your phone. It still helps when the phone won’t open.