For people who are concerned about having their devices seized at US airports starting Monday when ICE "assists" the TSA, EFF has this guide: https://www.eff.org/deeplinks/2025/06/journalist-security-checklist-preparing-devices-travel-through-us-border
A Journalist Security Checklist: Preparing Devices for Travel Through a US Border

We wrote this checklist to help journalists prepare for transit through a U.S. port of entry while preserving the confidentiality of your most sensitive information, such as unpublished reporting materials or source contact information. It’s important to think about your strategy in advance, and begin planning which options in this checklist make sense for you.

Electronic Frontier Foundation
@evacide duress codes, play dumb "It was working when I handed it to you,. my password is my DOB..what did you do officer? why is my phone broken?"
@d3adpaul @evacide
That would be good, if there isn't a thing "tampering of evidence".
Duress code is good only for wiping your device before they lay hands on your device.
@Orca @evacide very hard to prove you tampered with evidence if you had over a perfectly good phone and they input your password and it's nuked. good luck proving it wasn't their incompetence.
@d3adpaul @evacide
How is it hard? Law enforcement organizations have standard procedures of dealing with seized devices, they're not going to own it to incompetence if you told them a code and the code break the OS.

Also competent law enforcement organizations likely already knows what will happen if a duress password is entered (what happens immediately, and after a while) for a OS that's provided in public. They would have proof of you tampering with evidence if your device functions exactly like it has duress feature activated, after entering your password.

@Orca @evacide you can send duress via sms too and I think in practice enforcement is nowhere near that competent. before it ever gets to a techie it passes through a bunch of beat cops.

an besides prove it to a judge.

@d3adpaul @evacide
Oops.
One of the standard practice of LE is: they would put the devices into farady bags the second they seized it.
@d3adpaul @evacide They don't give it to the techies immediately. They follow whatever the techies said until they can hand it to the techies.
That's called cooperation.