of those, you should take a look at their competitors like Trezor and see if the lower price tag and the sacrifice of some technology makes them a better bargain. If the location of your wallets or your passwords are not bitcoin cash cotizacion online known by anyone when you are gone, there is no hope that your funds will ever be recovered. And if somehow you lose your Ledger Blue and someone else finds it (or steals it you will not have to worry about them accessing your funds. As far as security goes, the Ledger Nano S is no slouch.
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Because the computer that is connected to the network cannot sign transactions, it cannot be used to withdraw any funds if it is compromised. Use a strong password. Bitcoin is different from what you know and use every day. Bitcoin or, litecoin or Dogecoin or any other cryptocurrency, all of them will be protected. The other one of course being the original hardware Bitcoin wallet, Trezor.