Many thanks for the suggestions and advice on this. BITKEY is also a distribution of Debian that was designed with cold storage in mind.
See here:
https://distrowatch.com/table.php?distribution=bitkeyhttps://bitkey.io/plus usage videos:
https://www.youtube.com/watch?v=Vm0NkC9RVTQhttps://www.youtube.com/watch?v=gR0ip9k-r7Yand also
https://www.youtube.com/watch?v=HjbDNX87OnkThis site has a section in it that compares TREZOR and BITKEY:
https://en.bitcoin.it/wiki/How_to_set_up_a_secure_offline_savings_walletTREZOR protects against what are termed keyloggers.
BITKEY would not protect against what is termed a hardware keylogger, and not against extortionists.
Apparently you would be storing an unsigned check using it.
If I understand it correctly, Electrum can only trade in bitcoin. Is that correct? If so how does
one buy and store altcoins?
I think TREZOR can store some but not all altcoins. There seem to be a large number of them.
Is there an equivalent of a credit card that exists in the bitcoin world? Would the interest rate be lower
than conventional banks charge?
I think I need to experiment with different methods and learn as I go along here.
Regards
MF