Dooors 69, this level is about signal propagates, you will see a red dot moving from left to right following the signal traces.
solution is : you need to shake your device(up side down), when the red dot is in squiggly zone.
each time you make it, the red light above the door will turn green, so repeat until all the lights turn green.
if needed, tap on the the door to open it, and continue to the next level
