Fraudsters can still use your debit card even if they don’t have the card itself. They don’t even need your PIN—just your card number. If you’ve used your debit card for an off-line transaction (a transaction without your PIN), your receipt will show your full debit card number. You should always destroy these receipts so no one finds your card number.
You can customize your debit or credit cards with a second line. Have a favorite nickname, sports team or just something fun you want to include?