[ElongatedMusket]

Talking up the tech of having physical plastic cards hold value, but ignoring the real-world implications, is kind of silly right? Maybe it would have been better for the author to get that out of the way first... something like "if plastic cards held a value, public figures such as celebrities and CEOs would be robbed, kidnapped, held ransom, etc due to the values of the cards, so they are not practically safe in our non-utopian world. But let's explore the tech behind it anyway"

[lxgr]

You’re missing an important point: It’s possible to carry some of your money with you, and leave most of it somewhere more safe, in whatever form, just like with cash.

[jaclaz]

And another important point, public figures tend to have assistants with them that carry the money or the cards or just pay later.

[pjc50]

The cards are kind of a cash-substitute.

[kwhitefoot]

That's just about the silliest idea I have read this month.