Travel Mode will completely remove vaults not marked 'safe for travel' from your devices. That includes every item and all your encryption keys. Even if asked to unlock your 1Password at the border there's no way to detect Travel Mode is enabled.
How It Works:
Let’s say I had an upcoming trip for a technology conference in San Jose. I hear the apples are especially delicious over there this time of year. :) Before Travel Mode, I would have had to sign out of all my 1Password accounts on all my devices. If I needed certain passwords with me, I had to create a temporary travel account. It was a lot of work and not worth it for most people.
Now all I have to do is make sure any of the items I need for travel are in a single vault. I then sign in to my account on 1Password.com, mark that vault as “safe for travel,” and turn on Travel Mode in my profile. I unlock 1Password on my devices so the vaults are removed, and I’m now ready for my trip. Off I go from sunny Winnipeg to hopefully-sunnier San Jose, ready to cross the border knowing that my iPhone and my Mac no longer contain the vast majority of my sensitive information.
After I arrive at my destination, I can sign in again and turn off Travel Mode. The vaults immediately show up on my devices, and I’m back in business.
More details on Travel Mode can be found at the link below...