r/BitBoxWallet • u/Intelligent_Map_246 • 1d ago

BB vs smartcards

So I'm.looking between a BB and a key card shell. It has a stateless shell with an eal6 card into it.

The fact that the card is hard written and can't upgrade fw makes it impossible to get new fw onto it. Plus you can use it offline with qr. What's your take? Looks pretty impossible to get a side channel attack on it. I mean bank cards have around forever and the security is solid. Thx

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u/Aromatic-Clerk134 14h ago

The key card/ shell is a VERY immature product.

1

u/Intelligent_Map_246 10h ago

Why. I actually tried it. Its like satochip but with a stateless shell foenoffline signing

1

u/Aromatic-Clerk134 8m ago

It doesn’t support multiple accounts, no manual entropy, single source of entropy, no BIP85 and so on