Jack Dorsey
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Jack Patrick Dorsey is an American tech entrepreneur and businessman who co-founded Twitter, Inc., which operated social media service Twitter; financial technology company Block, Inc., which owns and
Dorsey in 2018
Dorsey in 2008
Dorsey and President Barack Obama at Twitter Town Hall in July 2011
President Donald Trump with Dorsey in the Oval Office of the White House on April 23, 2019
Square (financial services)
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Square is a point-of-sale system for sellers with physical or online stores. Launched in 2009 by Block, Inc., it enables merchants to accept card payments and manage business operations. As of 2024, S
Jack Dorsey
…businessman who co-founded Twitter, Inc., which operated social media service Twitter; financial technology company Block, Inc., which owns and operates Square, Cash App, Afterpay, Bitkey, and Tidal; and microblogging social networking service Bluesky. As of February 2026, Forbes estimated his net worth to be…
In 2010, the Square device was able to communicate with the Square app through the phone's audio jack.
Square Stand at a coffee shop turned around for the customer to choose a tipping option