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Check and confirm transactions on the display and confirm with using the physical buttons (anti-malware second factor)
Your confidential data is never exposed: it is secured inside a strongly isolated environment locked by a PIN code
Use companion apps such as cryptocurrencies wallets, and also FIDO U2F, GPG, SSH or build your own applications
Ledger Nano S supports the FIDO Universal Second Factor authentication standard on Google, Dropbox, GitHub or Dashlane