Hi,

just bought a Ledger Nano S.

I have BTC, LTC, ETH, ARK and various different tokens on various exchanges.

What would be the best way to secure all my coins/tokens?

I do know MEW. What confuses me is that you can access MEW by simply plugging in the Ledger Nano S. Doesn't that mean that anybody who steals my Device could access all tokens in MEW?

Obviously using a hardware wallet is very secure for attacks from the web. But what about physical attacks (burglary)?

Another question: I hold my BTC in Electrum, protected by a strong password. Can I just switch to Ledger Nano with the same wallet or add the Ledger as an additional security?