If you buy crypto currencies in one country and then travel to another country, as long as I have the passphrase and private key on paper, hidden in mulptiple places and the crypto on an online exchange, no kyc, p2p bought, non custodial and bought on a clean laptop, can I delete the website from by laptop, including the online wallet, and then sign in again to that exchange after travelling.
I have heard, dont know if it is true, but better safe than sorry, that they now have devices to scan your smartphone and laptop to see what is on it. I would not be surprised if they do that now, the governments of the world are becoming very anti crypto currency, especially for privacy coins.
In theory, you should be fine as long as you have you keep your private key, I don't think they have reason to confiscate your bitcoin at some point, or how are they gonna know that you hold bitcoin in the airport?
I mean you can easily hide it if you want to make sure about it, if the country doesn't have any issues buying cryptocurrency I think it's fine but we never know. Especially in country where bitcoin is banned I think that is where you might encounter problems if they know that you have they bitcoin.
But just like what I've said you can easily hide that from them and there's no way that they will know that you have bitcoin holdings in your wallet.