Problem is your parents or anyone else in the mainstream still won't use it. There is no denomination and they don't know that it won't be hacked. There is a re

Problem is your parents or anyone else in the mainstream still won't use it. There is no denomination and they don't know that it won't be hacked. There is a reason that physical assets in private vaults are fiat and precious metals... their value is self-evident and therefore completely trusted and fungible by everyone. Once you cloak the value in a card, all bets are off for mainstream adoption.