Understand hand detection—and the limits of a claim

In-browser detection

The model locates 21 hand joints; it does not identify or interpret palm creases.

Cultural reflection card

After successful detection, you explicitly select one non-scientific prompt from a fixed set.

Photo stays on your device

This feature processes the photo only in the current browser session.

Interactive atlas of the 21 hand landmarks

Inspect MediaPipe’s coordinate map from wrist to fingertips and learn what computer vision can locate—and what those points cannot tell you about a person.

Palm creases, joints, and detector landmarks compared

Separate four concepts that are easily confused in a hand photo: skin creases, anatomical joints, model coordinates, and symbolic names added by palmistry traditions.

Interactive Barnum effect lab

Compare two broad statements before seeing the explanation, then examine where the feeling of accuracy comes from and how to avoid mistaking resonance for personal evidence.

How to evaluate palmistry and divination claims

Use seven repeatable questions to examine a claim: what it predicts, how it could fail, what comparison matters, and whether the evidence can be independently reproduced.