3 ms·
You're not wrong, but that is precisely the tradeoff: stored-value is more reliable but also more vulnerable. It's reminiscent of the old NASA saying: "faster,
by ThePowerOfFuet 2y ago
You're not wrong, but that is precisely the tradeoff: stored-value is more reliable but also more vulnerable.
It's reminiscent of the old NASA saying: "faster, better, cheaper: pick any two".
- account42 2y agoYou don't need the system to be invulnerable to fraud, you just need to be able to detect it. Offline stored value cards plus separately shipping transactions to a central system with eventual consistency can give you that. The vending machine in question probably isn't invulnerable to physical break in either.