smart card

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A plastic card containing a computer chip and enabling the holder to purchase goods and services, enter restricted areas, access medical, financial, or other records, or perform other operations requiring data stored on the chip.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A plastic card that has information stored on a computer chip.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a plastic card containing a microprocessor that enables the holder to perform operations requiring data that is stored in the microprocessor; typically used to perform financial transactions