Anything on the net can be attacked or hacked.
This presents a problem for those HODLing crypto, as we are all our own bank as far as crypto goes.
Mobiles can be lost, viruses can destroy hard drives, so paper wallets have been an good way to store crypto 'off-line'.
But what if the paper is destroyed or lost. A fireproof safe might help.
This new idea of using stainless steel may be a solution.
However the article is not clear on how the safe words and keys are secured. maybe they are just laser etched on the fireproof steel card. So perhaps it still would require to much effort from the user to recover they money.
Solutions to self-banking will become more available as the industry and volume of users increases.
or maybe the world will go full circle, and we will end up with more centralised 'banks' that insure our funds.
Time will tell