what are, in your opinion, the best hardware wallets/devices for bitcoin?
I ask because I'm newbie on this topic; I've heard only of trezor, ledger and jade, which are quite famous. Please, forgive my ignorance.
Here are some things I think it is worth knowing about HD:
- is the firmware open source?
- is the hardware open source?
- is it air-gapped ?
- is it bitcoin-only?
- can the funds be accessed via common bitcoin wallets (electrum, samurai, etc) or does it require specific software made by the same company selling the device ?
- does the vendor sell it to other countries or is it specific to some regions?