Putting this under Other because it’s not really Economics.
I guess this is a question about banking security. Most people don’t withdraw past the ATM limit anyway, so why do tellers insist on seeing a photo ID even though the customer could easily withdraw that same money from an ATM without that step?
In: 10
There several types of identifications:
Something you are: This is the usual biometrics, typing, voice, fingerprint, signature, iris, and face.
Something you have: Usually a physical identification in this question, ID such as passport, drivers license, National ID cards, and a few others that includes a photo, these also include a signature, eye color, height and gender, that can be visually confirmed, another important example here, would be your debit card, passbook or bankbook.
Something you know: Thus would be passwords, codes and pins.
In a bank, you can withdraw money with either something you are, and something you have, or something you have and something you know.
A debit card, passbook, or bankbook, usually contains the account number, and the name it belongs to, this can then be used to check who got permissions for withdrawals, sometimes a Husband or a Wife might also be added to the account, they can use this information to request proper identifying information from you.
However, with an ATM, we don’t have the option of checking accounts and doing direct withdrawals, you have your card, witch you use to identify which account to withdraw from, and you have, most commonly, a pin code.
This is basic forms of multi-factor identification, since anyone could easily guess an account number and claim it to be theirs, but no bank would withdraw from it, without proving you are the owner, or have been allowed by the owner to withdraw from it.
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