don't have the slightest knowledge of this !

Nope 👎

Jack is a good guy.

Fuuuuck no. Imo a signing device should have a way to view the addresses that you're sending to, fees, change adresses etc...

I get that ther are not targeting "power users" but blindly signing a transaction feels like a bad idea. i don't even know if it has a companion app or if other wallets are supposed to integrate support for it.

You decide. https://www.zherbert.com/bitkey/