03/18/2010 05:12 am ET Updated May 25, 2011

Professor Claims Jack Dorsey's Square Took His Technology

Square, a new company that makes a small device to let anyone make a credit card payment from their mobile phone, has probably stirred up more excitement than any other startup launching in recent months.

But Bob Morley, an associate professor of electrical engineering at Washington University in St. Louis, says there's a big hitch: He built Square's credit card reading technology and has filed a patent for it, so the San Francisco company doesn't own a key part of its tech. He came up with the concept, designed it, and assembled the first working prototype for it, he says.

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