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0003 Mobile phones and other communication-capable portable personal communication and computing devices, such as Blackberry (R, IPodTM, Droid TM and the like are among the most popular portable personal devices, with over four billion in use currently worldwide, and increasing rapidly (herein collectively “portable personal devices'). Other per Sonal communication and computing devices, portable and otherwise, include WiiTM game controllers, in-car PCs, GPS devices, tablet PCs (eg, iPadTM) and TiVo (R) players (herein, collectively with “portable personal devices.”“personal devices'). These personal devices feature powerful proces sors and internet connectivity via, for example, 3G, 4G, and WiFi interfaces, and the like, making personal devices increasingly important as communications and computing platforms.

0004 People tend to share their belongings with their friends. For example, people often …