there is really something after cash  . there is this digital currencies which for sure they already know but those digital currency does not mean that its already a crypto but crypto can rank farther to them.  this is why people arent aware and concern individuals are always welcome to introduce it to them .  you did a good job there and op too . inserting  crypto/bitcoin talks on what we do is better and theres a big chance that people will listen than explaining it to them directly .