Right. Again, it is travel outside the US for work and then returning. My fearful use case is being stopped by Immigration upon return and required to allow them to inspect any and all devices I am carrying. Ideally, I guess, I would be erasing both the Mooltipass and the card before return. If I was really paranoid I would be deliberately mis-logon to the card, thus destroying it, and then physically destroy the card. Which is why I bought 100 cards.
Of course this also conflicts with my desire to not destroy anything; thus my question about erasing just the card.