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The cursor mapping the finger’s motion , so we can control the cursor straightly without screen is covered by the finger.Slide from Backstep button to choose letters.Relase the button to Delete.Easy to delete no matter how much you want to.No more rapidly touching and holding.Slide back to Backstep to Cancel.
Southwest Petroleum University
ChengDu, SiChuan, China
Liangkai Zhou,
Southwest Petroleum University