there's already some fraud, waste, loss, inefficiencies, accidents (packages lost, chargebacks by mistake, package arrives weeks later)
....
that said the chips have some physical protection, it's not trivial to clone them
and the chip has a variable where it stores how much more you can use without online confirmation
of course, these are cheap protective measures, but to crack it you would need more effort probably than the total credit that's assigned for offline spending
What's the information theory connection in your view?
> these are cheap protective measures,
They're holding up extremely well. I'm not aware of any cryptographic or physical key extraction compromise in EMV, for example. All known bugs are protocol design oopsies, as far as I'm aware.
it's okay
there's already some fraud, waste, loss, inefficiencies, accidents (packages lost, chargebacks by mistake, package arrives weeks later)
....
that said the chips have some physical protection, it's not trivial to clone them
and the chip has a variable where it stores how much more you can use without online confirmation
of course, these are cheap protective measures, but to crack it you would need more effort probably than the total credit that's assigned for offline spending