Fallout Shelter Hack Here

Use headphones to track him. The musical cue is "3D"—if the sound is louder in your left ear, he is on the left side of your vault.

Max Out Your Vault: The Ultimate Guide to Fallout Shelter "Hacks" Fallout Shelter Hack

Sometimes the best "hack" is just smarter building. To avoid catastrophic failures from radroach infestations or fires: Use headphones to track him