To enhance the experience of NB user interface & product value adding.
Lower cost but increase the operating experience a lot.
Add a capacitance sensor on the right side edge with easy finger swipe and operate gestures: Fig. 1
o Scroll up/down
o Zoom in/out
o Next/Previous …etc
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INC, HP, "NOTOEBOOK EDGE-SENSING FEATURE FOR USER EXPERIENCE ENHANCED", Technical Disclosure Commons, (January 30, 2020)