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2. Magnetic secure transmission - Wikipedia

   en.wikipedia.org/wiki/Magnetic_secure_transmission

   Hence, in contrast to payments using near-field communication, MST technology is compatible with nearly all payment terminals that possess a magnetic stripe reader. [1] [2] MST is designed to transmit from within 3 in (76 mm) of the magnetic card reader. [3] Outside of physical transmission, there are no changes to the magnetic stripe card ...

3. Square (financial services) - Wikipedia

   en.wikipedia.org/wiki/Square_(financial_services)

   Square Reader is Payment Card Industry Data Security Standard compliant and Verisign certified. [22] Square provides its magnetic stripe card readers to sellers without charge. [53] Square charges $99 for Square Stand and $59 for its chip-based Square Reader. [54] The Square app is freely downloadable from the Apple App Store and the Google ...

4. How to make payments with your phone - AOL

   www.aol.com/finance/payments-phone-164336000.html

   Open the Wallet app on your iPhone, tap the plus sign and follow the instructions to add a new card to Wallet. Once you’ve added the card, your bank or card issuer will verify the card.

5. Apple Pay - Wikipedia

   en.wikipedia.org/wiki/Apple_Pay

   Apple Pay is a mobile payment service by Apple Inc. that allows users to make payments in person, in iOS apps, and on the web.Supported on iPhone, Apple Watch, iPad, Mac, and Vision Pro, Apple Pay digitizes and can replace a credit or debit card chip and PIN transaction at a contactless-capable point-of-sale terminal.

6. Proximity card - Wikipedia

   en.wikipedia.org/wiki/Proximity_card

   A proximity card or prox card [1] also known as a key card or keycard is a contactless smart card which can be read without inserting it into a reader device, as required by earlier magnetic stripe cards such as credit cards and contact type smart cards. [2] The proximity cards are part of the contactless card technologies.

7. Contactless payment - Wikipedia

   en.wikipedia.org/wiki/Contactless_payment

   EMV contactless symbol used on compatible payment terminals. EMV stands for "Europay, Mastercard, and Visa", the three companies that created the standard.Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for ...