"According to a new law, the Hong Kong police can demand that you reveal the encryption keys protecting your computer, phone, hard drives, etc.—even if you are just transiting the airport."
https://www.schneier.com/blog/archives/2026/04/hong-kong-police-can-force-you-to-reveal-your-encryption-keys.html
Hong Kong Police Can Force You to Reveal Your Encryption Keys - Schneier on Security

According to a new law, the Hong Kong police can demand that you reveal the encryption keys protecting your computer, phone, hard drives, etc.—even if you are just transiting the airport. In a security alert dated March 26, the U.S. Consulate General said that, on March 23, 2026, Hong Kong authorities changed the rules governing enforcement of the National Security Law. Under the revised framework, police can require individuals to provide passwords or other assistance to access personal electronic devices, including cellphones and laptops. ...

Schneier on Security

@yawnbox pretty sure this is also true in the UK. They just have to say it's terrorist related, which these days means nothing (eg holding up a sign is now an offence under anti terror laws here, provided the Home Secretary has made some arbitrary oppressive classification - at least one Jury disagreed though. So now they're getting rid of juries. Thank you fascist #UKLabour).

A few years ago they were using this to try and bully journalists into revealing encrypted data.