U2F is only an authentication tool, not security/encryption one.
If you have your smartphone/browser/pc pwned, you are even more screwed than with offline key table/token.
For something truly security critical, you need security against MITM on your own device, which only leaves smartcards as an option.
U2F is only an authentication tool, not security/encryption one.
If you have your smartphone/browser/pc pwned, you are even more screwed than with offline key table/token.
For something truly security critical, you need security against MITM on your own device, which only leaves smartcards as an option.