Seems like it'd be a fairly simple project for someone looking to play with an Arduino, Raspberry Pie, or just a simple low cost single chip AVR or PIC processor coupled to a servo and stylus mounted on a simple arm or just a servo horn. Extra points for USB \battery powered, a clip that fastens the whole thing to the back or base of a reader and a nicely debounced pushbutton on the box or on a remote shutter release cable.(electronic versions can be found cheap on ebay and the like -think I paid about $3 for my Olympus.)
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