Question

For an extra level of security, some smart cards today store ____ data in the card and use that data to authenticate the card's user before authorizing the smart card transaction.

Answer 1

I believe the answer is: biometric data

Biometric data refers to a form of data that required some sort of biological component as a form of authorization to increase the level of security. This could be seen in smart cards that require finger prints of the owners in order to be activated/used.

Answer 2

I think the correct term to fill in the blank would be personal. For extra security, some of the smart cards today store personal data providing personal identification for authenticating the user's transactions. Another name for smart cards is integrated circuit card.