Compare - Face Age

When a shopper has more than one scan in their history, opening an analysis shows a Compare tab. They can compare it with any older scan and see how each metric changed.

Compare tab with the metric-by-metric difference between two scans

Turn it on

Compare needs history, and at least two scans:

const faceAge = new FaceAge({
  elementId: 'FaceAge-module',
  faceageId: '<Your Client ID>',
  history: true,
});

If you store history in your backend, pass each earlier scan with setHistoryData.

How scans are compared

Shared metrics are normalized before comparison.
Changes inside a 3-point noise band are treated as stable, so small differences between photos don’t show as progress or decline.
The optional meta.quality values in a history item — lighting, brightness, sharpness, blur, noise and confidence — widen that band, or mark very low-confidence comparisons as insufficient data.

Send meta.quality with backend history when you have it. It keeps comparisons honest when two photos were taken in very different conditions.

Next

Quiz

Ask shoppers questions alongside the scan.