Keystone crypto wallet

[CEO]

another device with closed-source firmware? that's a no go

Check :

Keystone

keyst.one

 

[CEO]

Keystone - Hardware Wallet for Zcash - Least Authority

A security audit of the Keystone Hardware Wallet, which supports Zcash users managing their assets.

leastauthority.com

 

[void]

I agree, Keystone would be probably my second choice however compered to Trezor it's way less convenient for travelers