Sam Altman is a co-founder and CEO of Loopt, a location-based social networking mobile application. Loopt was founded during Altman's sophomore year at Stanford University where he studied computer science with a focus on security and machine learning. After raising more than $30 million on venture capital, Altman shut down Loopt on March 9th, 2012 after much of the team was "acquihired" by Green Dot Corporation. At Stanford, he helped build an autonomous helicopter navigation system.
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