The ability to walk up to any computer, personalize it, and use it as one's own has long been a goal of mobile computing research.
http://seattlepi.nwsource.com/business/aptech_story.asp?category=1700&slug=Virtual%20Desktops%20Soul%20Pad
http://www.research.ibm.com/WearableComputing/SoulPad/soulpad.html
Re-Constituted Computer Souls (research project)
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