Hold a handwritten digit in the square. The card does not have to fill
it — edges, hands and background are ignored automatically, as are ink colour
and a light or dark background. If the reading looks wrong, tell it so.
—
waiting for camera
model sees
What digit was it actually?
Sends only the small capture square and the
28×28 image the model saw, to improve it. No full camera frames,
nothing else about you.