I think it's a matter of priorities and experience. I've seen various IT failure modes. This results in me being completely unwilling to be caught in a strange

I think it's a matter of priorities and experience. I've seen various IT failure modes. This results in me being completely unwilling to be caught in a strange country WITHOUT something physical and tangible in my hand. In fact, the most disempowering feeling in my life has repeatedly been when a border guard takes my passport away to one building and I'm directed to proceed somewhere else (happened a lot at Canada/US border especially after 911). You feel completely naked and have no defense other than "this random dude with a gun took it away and told me to stand here" - opening itself to any number of Kafkian nightmare scenarios.