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2. Contactless smart card - Wikipedia

   en.wikipedia.org/wiki/Contactless_smart_card

   A contactless smart card is a contactless credential whose dimensions are credit card size. Its embedded integrated circuits can store (and sometimes process) data and communicate with a terminal via NFC. Commonplace uses include transit tickets, bank cards and passports. There are two broad categories of contactless smart cards.

3. SumUp - Wikipedia

   en.wikipedia.org/wiki/SumUp

   Chip & PIN and NFC card terminal: SumUp's main product is an EMV card reader which can read magnetic strip, chip ("Chip and Pin"), and RFID/NFC ("contactless") payment cards. [18] The card reader pairs with an Android or iOS -based smartphone or tablet via Bluetooth , to verify payments through the Internet.

4. MIFARE - Wikipedia

   en.wikipedia.org/wiki/MIFARE

   This makes it possible to use the same card with both readers that can read MIFARE Classic products (with sectors protected by 48-bit CRYPTO1 keys, "Security Level 1") and readers that can read MIFARE Plus products (with sectors protected by 128-bit AES keys, "Security Level 3"). This feature is intended to make it easier to gradually migrate ...

5. Smart card - Wikipedia

   en.wikipedia.org/wiki/Smart_card

   Smart cards are not always privacy-enhancing, because the subject may carry incriminating information on the card. Contactless smart cards that can be read from within a wallet or even a garment simplify authentication; however, criminals may access data from these cards. Cryptographic smart cards are often used for single sign-on.

6. Why businesses are not using credit card chip readers - AOL

   www.aol.com/finance/2016-04-12-why-businesses...

   Retailers are now responsible for any money lost owing to credit card fraud if they do not use a chip reader, and while some large retailers have readers installed, not all of them are actively ...

7. Card reader - Wikipedia

   en.wikipedia.org/wiki/Card_reader

   A card reader is a data input device that reads data from a card-shaped storage medium and provides the data to a computer. Card readers can acquire data from a card via a number of methods, including: optical scanning of printed text or barcodes or holes on punched cards, electrical signals from connections made or interrupted by a card's punched holes or embedded circuitry, or electronic ...