【#Square: Systems and methods for decoding card swipe signals】

Square certainly had its IP management strategy devised early on; it filed its first patent and a dozen others on the same day. This patent, which cited founding engineer Sam Wen as inventor, was filed in October 2010. It details exactly what anyone who has visited an arts and craft festival in recent years knows well – swiping a credit card on a mobile phone is an incredibly easy way to buy and sell anything. It’s also a great way to create a multi-billion-dollar valuation.

Source: blog.ipfolio.com