magnetic strip

/mægˈnet̬·ɪk ˈstrɪp/ n [C/U] (also magnetic tape)

Definition

› a plastic strip on which information can be recorded, for example on the back of a credit card: [C] The state started issuing driver's licenses with magnetic strips on the back that contain data. [U] The data recorded on magnetic tape was analyzed with the aid of a computer program.

(Definition of magnetic strip n from the Cambridge Academic Content Dictionary © Cambridge University Press)