A light meter reads the light exactly and keeps none of it. Every nulabs instrument is built to that standard — unable, not unwilling, to keep what it sees.
In a Bangkok private hospital, the lift lobby is the one room where everyone stands still. Families wait, facing a screen that plays checkup packages and vaccination weeks. Nobody measures this audience — the only tool that could is one no hospital will allow inside.
Camera analytics was the industry’s answer, and it is the one answer a hospital can never accept: recordings of patients, protected by nothing stronger than a vendor’s promise. So the requirement became architectural — whatever this device is, it must be unable to keep what it sees.
Light enters; the device counts people, groups, and seconds of attention; the frame is destroyed in memory in under 200 milliseconds; numbers leave. The refusal is not in the manual. It is in the binary.
nulabs signs every instrument it ships. Alumbra is the first.