Born in front of a hall.

CLAIRIO grew out of that question, the one anyone who has spoken to a room keeps asking. By the third row faces blur. By the tenth you are speaking to a crowd.

The first models read head orientation and gaze direction, and that is still exactly what the engine does, in the browser of the room computer. The rest came from the room itself: the questions nobody dares to ask, the report that says on which slide attention gave way.

Soon the technology was only half the problem. The other half is trust: a tool that looks at an audience must respect it. CLAIRIO measures rooms, not people, and records nothing.