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Jack Patrick Dorsey (born November 19, 1976) [3] is an American programmer and businessperson, who is a co-founder and former CEO of Twitter, Inc. from 2015 until 2021, as well as co-founder, principal executive officer and chairman of Block, Inc. (developer of the Square financial services platform).
Block, Inc. (formerly Square, Inc. [10]) is an American technology company that provides financial services to consumers and merchants. [11] [12] [13] Founded in 2009 by Jack Dorsey, it is the U.S. market leader in point-of-sale systems.
The inspiration for Square occurred to Jack Dorsey in 2009, when his friend Jim McKelvey was unable to complete a $2,000 sale of his glass faucets and fittings because he could not accept credit cards.
Jack Dorsey, then an undergraduate student at New York University, introduced the idea of an individual using an SMS service to communicate with a small group. [22] [23] Work on the project started in February 2006. [24] Dorsey published the first Twitter message on March 21, 2006, at 12:50 p.m. PST (UTC−08:00): "just setting up my twttr". [1]
Twitter's then-CEO Jack Dorsey first announced the Bluesky initiative in 2019 on Twitter to explore the possibility of decentralizing Twitter. [19] [28] The stated goal was to find or develop an open and decentralized standard for social media that would give users more control over their data and experience.
Despite Jack Dorsey's own open contention that a message on Twitter is "a short burst of inconsequential information", social networking researcher danah boyd responded to the Pear Analytics survey by arguing that what the Pear researchers labeled "pointless babble" is better characterized as "social grooming" or "peripheral awareness" (which ...
Jack Dorsey, founder of Twitter [59] Martin Feldstein, former Chair of the U.S. Council of Economic Advisers [57] Henry Paulson, former U.S. Treasury Secretary [57] Robert Reich, former U.S. Secretary of Labor [60] Greg Mankiw, former Chair of the U.S. Council of Economic Advisers [57] George P. Shultz, former U.S. Treasury Secretary [57]
Jack Dorsey announced in June 2021 that Block was in the process of creating a cryptocurrency wallet. By April 2022, the company had released images of the wallet's hardware component, referred to as "Rocky" by Dorsey. This component was described to include a fingerprint reader and a USB-C charging port. [4]