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  2. Square (financial services) - Wikipedia

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

    In 2010, the Square device was able to communicate with the Square app through the phone's audio jack. The Square Reader was the firm's first product. It accepts credit card payments by connecting to a mobile device's audio jack. The original version consisted of a read head directly wired to a 3.5 mm audio jack, through which unencrypted ...

  3. Block, Inc. - Wikipedia

    en.wikipedia.org/wiki/Block,_Inc.

    Block, Inc. (formerly Square, Inc. [9]) is a U.S. listed company founded by Jack Dorsey and Jim McKelvey in 2009. It is a financial technology conglomerate. The company reportedly serves 56 million users and 4 million businesses, and processes payments worth US$ 228 billion annually as of 2023. [10] [11] [3]

  4. Cash App - Wikipedia

    en.wikipedia.org/wiki/Cash_App

    Cash App (formerly Square Cash) is a mobile payment service available in the United States and the United Kingdom that allows users to transfer money to one another using a mobile phone app. As of 2024, the service reports 57 million monthly transacting users and US$ 14.7 billion in annual revenues.

  5. Is it safe to give an app my credit card information? - AOL

    www.aol.com/finance/safe-app-credit-card...

    The bottom line. Popular credit card-based apps such as Uber, Lyft, Google Pay and DoorDash will ask for your credit card information for convenience of use. Considering there are standards that ...

  6. Starbucks Gets Square: Coffee King Switches to Mobile ... - AOL

    www.aol.com/2012/08/08/starbucks-square-deal...

    By Gerry Shih and Lisa Baertlein SAN FRANCISCO -- Starbucks (SBUX) plans to switch its processing of debit and credit card payments to mobile payments start-up Square, the two companies said ...

  7. Square Gets a $200 Million Valuation: Is This the Next PayPal?

    www.aol.com/2011/01/03/square-200-million...

    According to Sarah Lacy and Mike Arrington over at TechCrunch, mobile payments startup Square just got a new round of funding and a snazzy new valuation of $200 million. The company's rise is ...

  8. Payment terminal - Wikipedia

    en.wikipedia.org/wiki/Payment_terminal

    A payment terminal allows a merchant to capture required credit and debit card information and to transmit this data to the merchant services provider or bank for authorization and finally, to transfer funds to the merchant. The terminal allows the merchant or their client to swipe, insert or hold a card near the device to capture the information.

  9. Square's Cash App opens up to teens ages 13 to 17 with ... - AOL

    www.aol.com/news/squares-cash-app-opens-teens...

    The Cash Card, essentially a Visa debit card tied to the teen's Cash App account, can be personalized using the Cash App mobile app. Square's Cash App opens up to teens ages 13 to 17 with parental ...