Alan Freedman -- The Computer Language Company - Computer Desktop Encyclopedia
Computer Desktop Encyclopedia
Longest-Running Tech Reference on the Planet

A CDE Definition

You'll love The Computer Desktop Encyclopedia (CDE) for Tech Term of the Day (TTOD)

LOOK UP ANOTHER TERM


UltraCard

A smart card storage technology from the former UltraCard, Inc., Los Gatos, CA, that used a magnetic-coated strip of metal (a "shim") that was drawn almost entirely out of the card by the drive, read and written and inserted back in. Introduced in 1999, it provided 5MB of storage, greatly exceeding the capacity in smart card chips at that time and added biometric security. UltraCards used any combination of shim, magnetic stripe or contact-based or contactless smart card chip. See smart card.




The UltraCard
This illustration shows the shim extended as if it had been extracted by the drive for reading and writing. Note the smart card contacts. (Image courtesy of UltraCard, Inc.)






smart card

A credit card or ID card that contains a chip. When inserted into a reader (contact card) or held within a few inches of the reader (contactless), data are transferred to a central computer. Also called a "chip card," a smart credit or debit card is more secure than cards with a magnetic stripe, because it generates a unique one-time code for each transaction that is impossible to replicate with counterfeit cards. Smart cards can also be programmed to self-destruct if the wrong password is entered too many times. As a financial transaction card, it can be loaded with digital money.

Contactless Smart Cards Are Like Passive RFID
Like an RFID tag used to track merchandise and vehicles, a contactless smart card is also energized by receiving a radio frequency (RF) transmitted over the air. However, the smart card uses a microcontroller that can provide authentication, encryption and financial processing, whereas RFID tags generally contain only identification data. See EMV, NFC, magnetic stripe, PIV, SIM card, RFID, Java Card and FeliCa.




A Smart Contact Card
Cards can have multiple methods of data transfer. This card uses a barcode, and the gold pins make contact with a card reader. (Image courtesy of Smart Card Alliance, www.smartcardalliance.org)






The Chip Inside
The tiny chip is found on the back of the contact sheet. In this example, five of the contacts are actually connected to the chip.






Contact and Contactless
This Verifone reader accepts both chip-based credit and debit cards (arrow) as well as contactless payments via smartphones (see NFC). (Image courtesy of Verifone Systems Inc., www.verifone.com)






The Smarty Reader
Years ago, Smarty allowed a smart card to be read in a floppy disk drive. Smarty emulated the magnetic field of a rotating disk. (Image courtesy of Fischer International Systems Corporation.)






Personal Use Only

Before/After Your Search Term
BeforeAfter
ultra-rugged PCUltraD
Ultra SCSIultrafast laser
ultra-thin clientultrafiche
ultra-widebandUltraHD
Ultra2 SCSIUltraJava
Ultra3 SCSIultralight laptop
Ultra4 SCSIUltraPixel
Ultrabookultraportable
ultracapultraportable laptop
ultracapacitorultraportable PC

Terms By Topic
Click any of the following categories for a list of fundamental terms.
Computer Words You Gotta KnowSystem design
Job categoriesUnix/Linux
Interesting stuffPersonal computers
InternetIndustrial Automation/Process Control
Communications & networkingAssociations/Standards organizations
HistoryDesktop publishing
Audio/VideoGraphics
MainframesSecurity
ProgrammingHealthcare IT
System design