Depends on how you define airgapping. If it's a fungible "you know what I mean," well then obviously yes. If it's an actual air gap, then no.
Practical business requirements on inventory management, sales metrics, system administration and (funnily enough) payment processing all prevent a register network from being airgapped. If you want to say their protection of those communication channels was shit, well, we already have proof it was. But airgapping? Not so much.
Practical business requirements on inventory management, sales metrics, system administration and (funnily enough) payment processing all prevent a register network from being airgapped. If you want to say their protection of those communication channels was shit, well, we already have proof it was. But airgapping? Not so much.