Omron has announced a new technology called ‘Smile Measurement Software’, which uses 3D face-mapping technology to analyse people’s grins and assign them a smile rating between 0% and 100%, even if they’re not looking directly into the camera at the time.

It’s all done within a 46Kb application, which Omron says is small enough to be embedded inside mobile devices. The most obvious application is digital cameras, to ensure a photo is taken when the subjects are smiling.