https://www.nitrokey.com/ https://www.nitrokey.com/ and then install Qubes. What is your threat model? Do you have reason to suspect for package interdiction ?

https://www.nitrokey.com/ https://www.nitrokey.com/ and then install Qubes. What is your threat model? Do you have reason to suspect for package interdiction ? Lots of jewelry places use USPS to ship gems.