id

a unique number or code used to identify a specific item, person, or record in a database or system.

identificador, código único

• an id for something

Collocations id number · unique id

• Each user has a unique ID in the system.

  Cada usuario tiene un identificador único en el sistema.

a form of identification, such as a driver's license or passport.

documento de identidad, carné

• an id for someone

Collocations ID card · driver's ID

• You need to show your ID at the airport.

  Debes mostrar tu documento de identidad en el aeropuerto.