The distinction is useful for teams. It is dangerous as an either/or.
Physical security protects cash, modules, and the public interface. Digital security protects sessions, software, and communications. Attacks often cross the boundary: a skimmer is a physical object with a digital purpose.
Tamper sensors are physical devices that produce digital events. Encryption is a digital control that assumes the terminal is still the terminal you enrolled. Operations teams have to see both.
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Physical security is the first layer of ATM defence: housing, locks, sensors, and the cash path itself.
Physical hardening, device controls, encryption, monitoring, and operational discipline have to work together.
Encrypted, authenticated communication is how a distributed fleet remains a single trusted system.
Tell us about the network you run — or the one you need to build. Hardware, software, monitoring, security, deployment, and maintenance sit in one conversation.