Practice: Peeking
Single-hand practice · left-hand target. Show one hand at a time. Either hand can be used; the score measures finger shape, with mirrored comparison when it improves the match.
Camera view
Practice live
Show your hand to start scoring.
Starting camera…
Practice breakdown
Show your hand to highlight which fingers are out of spec.
Target gesture
Peeking
Scoring
Practice scoring uses finger joint angles plus palm-relative finger directions, with automatic mirrored comparison for opposite-handed matches.
Practice scaling exaggerates the visible difference between obviously wrong and obviously right attempts without changing the underlying structural similarity.