High technology the world's first intelligent control outside the window touch function - High intelligence can be arbitrarily set outside the window touch keyboard shortcuts - How to use it? 1>. Please use the professional cleaning set and blue screen electrostatic dust-remover to clean the screen first 2>. Tear off the type-1 sticker aim the film to screen holes and edge slowly put the sticker labeled 3>. With the finger gently press the middle part make the film absorption on the screen automatically 4>. With the finger or card tightly press the tiny air bubbles 5>. Scan the QR code download and install the software (Or download the "smarttouch" Android APP) 6>. Open the software function menu setting the functional shortcut keys