more like 2FA right? It's extra layer of protection? It's not actually going on the wallet. Or am I thinking this wrong?
youre thinking wrong.
Your coins are not on any wallet. They are on the blockchain. Wallets are just windows to see your assets on the blockchain.
with a hardware wallet you do not make the software wallet like metamask more secure, but you only use the software wallet like metamask to operate the ledger. the trick is that the private keys never leave the ledger. even if your computer is hacked, the attacker cannot access your private keys remotely because they are safely stored on a chip in the hardware wallet.
you unlock the HW with a PIN, and then confirm the details on the device - then decide wheter to approve (sign), or cancel the transaction ... still only "1 factor" by most definitions though
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