The amount of ecosystem development for Zcash is very encouraging. Right now I keep my Zcash in a hardware wallet, which I feel is very safe.
But none of the hardware wallets that I know of can keep z transactions in them. I notice when running a node I need at least 4GB of memory or RAMdisk to complete a z transaction.
Would it be possible to make a super-Trezor with the internal hardware required to sign z transactions?
Maybe the calculation uses flash instead of RAM? It would be slower, but it would work.
I'd like that, because then I could store my zcash in shielded instead of public transactions.