What happens if someone steals my Ledger Nano?

[Parius]

What happens if someone steals my Ledger Nano? Is there any way to get a key? Or is it completely impossible? What other potential risks does the owner of a Ledger Nano wallet face? I am going to buy it next month and transfer all my TRC20 to it. Can I download the Ledger app from here eshpc.org? The official crypto management app.