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"US patent 7814163 has been granted to Apple under the title \"Text-based communication control for personal communication device.\" It describes the ability to control content sent and received from an \"administered device\" as defined by a parental control application. If objectionable content is detected based on a table of words stored locally on the device, the content can either be removed or the message blocked entirely. It can also enforce a designated language for children who, for example, are required to practice a foreign language. Note that the controlled content is limited to text, so it won't stop naughty Kin owners from foolish behavior, like, well, buying a Kin."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2010/10/13/apple-thinks-of-the-children-patents-parental-controlled-text-c/>