Editing Smart card (section)

=== Financial ===
Smart cards serve as credit or [[ATM card]]s, [[fuel card]]s, mobile phone [[Subscriber Identity Module|SIM]]s, authorization cards for pay television, household utility pre-payment cards, high-security identification and [[access badge]]s, and public transport and public phone payment cards.

Smart cards may also be used as [[electronic wallet]]s. The smart card chip can be "loaded" with funds to pay parking meters, vending machines or merchants. [[Cryptographic protocol]]s protect the exchange of money between the smart card and the machine. No connection to a bank is needed. The holder of the card may use it even if not the owner. Examples are [[Proton (bank card)|Proton]], [[Geldkarte]], [[Chipknip]] and [[Moneo]]. The German Geldkarte is also used to validate customer age at [[vending machine]]s for cigarettes.

{{Main|Contactless smart card|Near-field communication|Credit card}}

These are the best known payment cards (classic plastic card):
* Visa: Visa Contactless, Quick VSDC, "qVSDC", Visa Wave, MSD, payWave
* Mastercard: PayPass Magstripe, PayPass MChip
* American Express: ExpressPay
* Discover: Zip
* Unionpay: QuickPass

Roll-outs started in 2005 in the U.S. Asia and Europe followed in 2006. Contactless (non-PIN) transactions cover a payment range of ~$5–50. There is an [[ISO/IEC 14443]] PayPass implementation. Some, but not all, PayPass implementations conform to EMV.

Non-EMV cards work like [[magnetic stripe card]]s. This is common in the U.S. (PayPass Magstripe and Visa MSD). The cards do not hold or maintain the account balance. All payment passes without a PIN, usually in off-line mode. The security of such a transaction is no greater than with a magnetic stripe card transaction.{{Citation needed|date=October 2015}}

EMV cards can have either contact or contactless interfaces. They work as if they were a normal EMV card with a contact interface. Via the contactless interface they work somewhat differently, in that the card commands enabled improved features such as lower power and shorter transaction times. EMV standards include provisions for contact and contactless communications. Typically modern payment cards are based on hybrid card technology and support both contact and contactless communication modes.