The SIM card ( Subscriber Identity Module) in cell phones provide the same function.

FORBES: Leveraging TPM

The typical standards of built-in optical drive, HP QuickPlay, 6-in-1 card reader and 6-cell batter round out the capable, but lower-end laptop.

ENGADGET: HP updates Pavilion DV1000, DV8000 and adds DV5000 notebook

It is also confronting the grim reality that, in a world filled with e-mail and cell phones, greeting card sales are flat.

FORBES: Wild Card

Innovative new technologies can make it easier to pay your bridge toll or bus fare, to search for nearby businesses from your cell phone, and to get in and out of secure areas with a card instead of a key.

FORBES: We're all being tracked all the time. Is it necessary?

Cell phones function much like debit cards in that they use a data chip (in this case, a SIM card) to store balances and enable withdrawals.

FORBES: Why Mobile Banking Will Take Off In Haiti

Square launched in 2009 as a way for people to take credit-card payments by swiping cards in a small plastic reader that plugs into the headphone jack of a cell phone.

CNN: Square seeks to replace cash register with revamped app