Other than the benefits of decentralisation, which all but eliminate the traditional fraud / impersonation scams that are rife in the banking sector, what are the security benefits of Nano?
So far I've got the aforementioned decentralisation. That secure wallet seeds (in spite of "the incident" with Android wallets) mean that gaining access to other people's wallets is more difficult than phishing for bank account details. That with the wallet seed, you can always get back to your wallet. In an extreme scenario, you could prevent theft of your currency by physically destroying the wallet and initiating a backup later. By password protecting your wallet, if the device storing it is stolen, you can access the compromised wallet with your seed and effortlessly move your funds to a new wallet.
What else is there?