Can you refuse to unlock your phone at airport?
Can you refuse to unlock your phone at airport? U.S. citizens cannot be denied entry to the United States for refusing to provide passwords or unlocking devices. Refusal to do so might lead to delay, additional questioning, and/or officers seizing your device for further inspection.
Can customs force you to unlock your phone?
Could CBP agents ask for my thumbprint or passcode/PIN to unlock my electronic de- vice, or for my email or social media passwords? Yes, even if you are a U.S. citizen or a lawful permanent resident (LPR, or “green card” holder). The law on whether you are legally required to comply is unsettled.
Do airports check your phone?
The TSA largely looks for physical evidence that a passenger could be a threat, so they'll generally have no reason to search through the data on your phone. After all, they're the Transportation Security Agency, not a detective agency. Even if they did have reason to want to access your phone, they'd need a warrant.