A plastic card with a magnetic strip containing encoded data that is read by passing the card through a slotted electronic device: A swipe card is primarily used to make electronic transactions and to provide access to restricted or secure places.

As a new employee, Marissa received a special swipecard that would allow her to be admitted through the security check point in the government building.

A plastic card; such as, a credit card, or an ID card, that has magnetically encoded information which is read when someone slides the edge of the card through an electronic device: Before James could gain entrance into the government building, he had to present his swipingcard to the guard who swiped it through the special electronic-identification machine.

Something that gives a person an advantage over other people: The senator used her trump card to pass the new bill.

The trump card of the prosecutor was his presentation of evidence that definitely connected the defendant to the murder weapon.