Remote readability is the ability to collect meter data without physically visiting each device. It usually depends on a chain of components: the meter, a radio or wired interface, a concentrator or gateway, and a backend system that stores or bills the readings. In building systems, this reduces manual work and makes large estates easier to manage, but it also turns a simple device into a connected asset.
In cyber security, that extra connectivity matters because every new data path can be abused. If authentication is weak, an attacker may impersonate a device or operator. If encryption or integrity checks are missing, readings can be intercepted or altered. If a gateway is exposed, it may become a pivot point into other building systems. Defenders reduce risk by inventorying devices, limiting access, encrypting telemetry, monitoring for unusual readings or failures, and keeping a fallback process for manual reads when remote collection is unavailable.