last four
Tournament's penultimate round
The last four digits of a number, typically a Social Security number, phone number, or credit card number.
Because revealing a full number poses security risks, the last four serves as a partial identifier: Can you verify the last four of your Social Security?
The card ending in last four 7842.
Customer service agents routinely ask for the last four to confirm identity without exposing the complete number.
- quarterfinalPenultimate elimination round
- semifinalSecond-to-last tournament stage
- truncationCutting something shorter
- PINAuthentication number sequence
- semiLarge freight truck
authentication · digits · Sweet Sixteen · checksum · card number · SSN · social security · verification · phone verification · security code · identity theft · March Madness · bracket · tournament · privacy · matchups · account number · playoffs
last fourfirst round
Initial stage of competition
opening round · round of 64 · qualifying round · play-in games · sweet sixteen
last fourexhibition game
Non-competitive preparatory match
preseason · scrimmage · friendly match · regular season · consolation round
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