| http://www.w3.org/ns/prov#value | - In a cell phone equipped with an accelerometer, inclinometer, or vibration-sensitive sensor, a physical motion may be used to provide input such as shaking the phone once or twice, turning the phone upside down, tilting the phone at a new angle (e.g., a 45 degree angle), etc., resulting in the inaudible and optionally digital transmission of information to wirelessly and inaudibly convey informati
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