Does Electrum support Ledger Nano? When you create a new wallet, there are 4 options, one being 'hardware wallet'. However, there is no mention of hardware wallets in the docs!
http://docs.electrum.org/en/latest/search.html?q=hardware&amp;check_keywords=yes&amp;area=default



How do it work? Does it communicate to the hardware wallet with a special protocol?
Yes, it does. There's a detailed guide on the Ledger site, and a bunch of videos on youtube explaining how to use your Ledger with a Electrum.