Apple (NASDAQ:AAPL) is buying digital security firm AuthenTec, known for its fingerprint scanners, for $356 million. The deal comes less than two weeks after AuthenTec inked a deal with Samsung Electronics to provide security and authentication solutions optimized for devices running Apple rival Google's (NASDAQ:GOOG) Android mobile operating system. AuthenTec offers encryption technology, fingerprint sensors, identity management software and Near Field Communications services integrated into a range of portable electronics products, including more than 15 million mobile phones. The deal was disclosed in a filing to the Securities and Exchange Commission, and, according to one of the filings, part of what AuthenTec may be doing as a subsidiary of Apple is "developing a 2D fingerprint sensor for Apple that is suitable for use in an Apple product." Article