Cross currents
Press start. One hand pinky to index, the other index to pinky, on each beat.
Hold both hands up where the camera can see them.
Touch thumb to fingers: one hand walks pinky to index, the other index to pinky — both on the same beat.
This practice also works by sound. A soft click marks each beat, every 1.2 seconds, 16 beats in all. On each beat, touch the thumb to one finger on each hand. Your right hand goes pinky, ring, middle, index, then starts again. Your left hand goes the other way: index, middle, ring, pinky. So on the first beat the right thumb touches the pinky and the left thumb touches the index finger. A bright chime means both hands were right on that beat. You can also switch on spoken finger names.
Your camera stays on your device. Nothing is recorded, stored, or sent anywhere.
Still Water
Press start. One hand pinky to index, the other index to pinky, on each beat.
Hold both hands up where the camera can see them.