Physical bitcoin, can be transacted offline. Just hand it over like a dollar bill:
Still mostly useful for larger amounts, though, due to the relative high cost of hardware, but it's new.
Still mostly useful for larger amounts, though, due to the relative high cost of hardware, but it's new.
Can't seem to find it again, though.
How would you be able to calculate the current value in fiat, if you had power but no internet?
For that matter, how could you verify that someone hadn't transferred the balance in a transaction that didn't exist in your (now offline) ledger (if they had internet and you didn't)?
At some point, if you're being practical rather than ideological, isnt cash the clear winner in these situations? YMMV if your currency isn't as stable as USD though