Moving blue bar across screen

When I open different programs, this line comes up. Once I exit out of the program it goes away. But will stay up the whole time I have the program open. it moves back and forth like a scanner. Just started a couple days ago. Have had the ipad for 3 months.

Go to Settings -> General -> Accessibility . Scroll down, In section Physical &amp ->motor,set the Switch Control to OFF. It will take care of it

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