Controlling　electronic　devices　by　touchless　methods　is　a　promising　research　field　due　to　its　application　in　healthcare,　lifestyle　monitoring,　and　human-computer　interaction,　providing　users　with　more　convenience　and　public　safety.　However,　most　of　the　functions　are　realized　by　capturing　visual　information　using　camera　or　radar　sensors.　Here,　we　demonstrate　a　flexible　and　relatively　transparent　touchless　sensor　achieving　non-contact　controlling　on　a　single　sensor　pixel　based　on　the　surface　charge　redistributions　under　hand　motions.　Moreover,　the　optimized　surface　design　method　is　analyzed　and　the　output　signals　are　increased　by　more　than　200%　after　hierarchically　nano-micro　textures　are　fabricated　on　the　sensing　layer,　providing　the　device　with　higher　sensitivity.　We　further　present　the　practical　application　of　such　sensors　to　skip　or　zoom　a　picture　without　laying　fingers　on　the　screen　of　computer,　even　under　though-obstacle　situations.　This　not　only　suggests　promising　applications　of　non-contact　controlling　methods　but　also　presents　a　strategy　for　signal　enhancement　of　near-field　sensing　technology.