Thread: Color Jetbook Color Stylus
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Old 04-06-2012, 09:42 PM   #11
ProDigit
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Posts: 2,157
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Join Date: Oct 2008
Location: Miami FL
Device: PRS-505, Jetbook, Jetbook Mini, Jetbook Color, Astak Ez Reader Pro
Probably the pen functions much like a store security sticker.
It has a specific size antenna, that resonates on a specific frequency. If the antenna's size is off, the frequency will be off, and both won't be compatible, or only partial compatible (meaning if they even have a few Mhz off, they will 'sometimes' work).

I presume it's something like this...
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