Everybody who has used a smartphone of a tablet knows the routine--yes its fun to use, but frustrating when it does not do what you expect. In Taiwan think tanks they are changing all that by designing apps and add-on hardware that do all the things you wanted you smartphone or tablet to do, but it wouldn't: R. Colin Johnson @NextGenLog
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Magnetic field detector add-on for iPad allows near-field sensing of styluses and tokens without interference from the users hands.Further Reading