In the future, each U.S. citizen may have a taxpayer’s digital certificate within a smart card. Citizens could use the smart card for all their transactions with the federal government. The government program responsible for developing this card is called Access Certificates for Electronics Services project, or ACES. While the intent of ACES is to ensure secure communications, privacy advocates are afraid that maybe the cards are too smart because they contain all your personal information in one place. ACES cards are only available to a federal or authorized agency but those concerned with privacy worry that the existence of the card will prove tempting for unintended uses.