You can make a GPG signing device out of it!
Read here:
https://github.com/romanz/trezor-agent/blob/master/doc/README-GPG.md#gpg-agent
Install for Jade here:
I am trying to do the same with a Ledger Nano S but I cannot make it work yet. Hopefully you have better luck with the Jade. I know that the Trezor works great for that!
