If you have done Windows 10 Windows Update before 2015/8/12, you may find your touch device become single touch or lost function.
Please refer below link for recovery SOP and related utility.
Projected Capacitive   Surface Capacitive
Resistive   Surface Acoustic Eave
Infrared   Accessory
2015/09 eGalaxTouch Driver for Windows 10
2015/08 Update eGalaxTouch Driver for Windows 8
2015/06 EETI eGalaxPen passed Windows 10 Pen Digitizer logo
2015/05 Update eGalaxTouch Driver for Windows
2014/11 EETI at Electronica 2014
2014/09 EETI SoC EXC3104 supports eGalaxPen
2014/07 EETI launched the first high voltage SoC EXC3104
2014/06 EETI set up showroom at EETI office during COMPUTEX TAIPEI 2014

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