Going after 2-factor auth as the simple way to manage this ("I can't get access, personally") seems wrong to me. The second factor is something you have. You'

Going after 2-factor auth as the simple way to manage this ("I can't get access, personally") seems wrong to me. The second factor is something you have. You'll normally travel with the "thing you have", and since many sites implement 2-factor differently, you'd have to change the setup for all of those sites before you travel. Instead, what about not knowing the password? This is pretty easy to do, and it's also good personal security generally. Use a password manager (like KeePass or LastPass), and set all passwords to unique random strings of 16 characters or so. If the password manager enters the passwords into websites for you, you'll never type them (and thus never memorize them). Then you just need a way to not know the keyphrase that unlocks your password manager datastore... that's easier to change quickly before you travel (or let your partner manage this, or use 2-factor on LastPass, etc. -- it's an easier problem, because it's just one thing).