Finger Position on Touchpad

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I would like to get the (x,y) coordinate being touched on a Logitech Wireless Touchpad. I am programming in Python and hope to use the touchpad as an input device to drive a microscope stage. I am not really sure how to access the touch data; I have tried to access the device's USB connection through PySerial, but I cannot connect to the device through this module. This is a multitouch touchpad, and as such I am also interested in detecting multiple touches. Thanks for any help.

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