Steganography comes to my mind:
Can't ask you for the password if they don't know there is one ¯\_(ツ)_/¯
if they can't access the device, they take the device
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Steganography is about hiding (potentially encrypted) data in other data like images. So you can unlock your device and they can take a look around but depending on your threat model, they won't find anything suspicious. So they won't ask you for your password for the hidden data since they don't even know it's there.
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aha gotcha, good point. Actually that's quite nice as you could carry a very long, secure key that you can subsequently use to access your cloud keepass database or something like that.
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yeah i think as long as you are not trying to protect yourself against state level actors you should be fine using that method
but also depends on the data you want to protect. not sure if you can easily hide a lot of data using steganography. but could be, like inside a long video or something
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