if you can remember freddy's next location you can just keep the cam on foxy
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Yeah, if you have headphones, then they will be very useful. Each time freddy moves, she giggles. On the fifth giggle, she'll be in the kitchen, but won't be attempting to breach your door. But when you hear footsteps, then close your right door.
Other than that, you'll only need cams to watch foxy.