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Even though the number of notebook users has been steadily
much more increased than that of Desktop PC users, there hasn’t been optimized
input device to be very user-friendly, convenient, portable and versatile, yet.
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Normally, we use the current lie-down mouse and laser
pointer, or tablet pen when we do some presentation during seminars of a
variety.
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Nowadays, it’s a kind of normal scene that PC users, in
particular notebook users carry some branded and some sized USB flash memory
stick for their easier mobility
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