Can I Authorize Someone to Use My Debit Card?
If you want a friend or family member to pick something up at the store for you or to have access to money for some reason, you can give her your debit card and PIN so she can use the card. However, this could potentially be a big mistake if the person you gave the card to abuses your trust.
If you check your bank's
debit card agreement, you will
most likely find that it is a violation of the agreement to share your card or PIN with anyone. The bank may also reserve the right to cancel your account.
Can I Authorize Someone to Use My Debit Card? | Sapling
Can You Use Someone Else's Bank Card or Lend Yours?
Most issuers require you to make an effort to avoid unauthorized use of the card, which is the use of your debit or credit card without your permission. However,
not all issuers treat the sharing of cards as unauthorized use. Some issuers outright prohibit anyone who isn't named on the card from using it.1 Others note that if you give someone else permission to use your card, it does not count as unauthorized use, but you will be liable for all charges they make.
Can You Use Somebody Else's Credit Card or Lend Yours Out?