AD7142: Signature capture

Document created by analog-archivist Employee on Feb 23, 2016
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Is it possible for the AD7142 to be used with a touch glass ?

Is it possible to use the AD7142 for signature capture ?


The AD7142 can function through a certain thickness of glass (a few mm).

I assume that for signature capture, it is necessary to measure a 2d position
repeatedly to obtain an image of the pen trajectory. In this case the AD7142's
suitability would depend on obtaining sufficient resolution in the 2d space and
sufficient sample rate.