Fanning will spread fingers to create an intermittent contact.
“If your partner prefers sensation across her whole vulva, use your whole hand, with fingers flat and pressed together, to stroke back and forth across her vulva and clit. The subtle ripple between your fingers will give stimulation similar to a vibrator. You can increase the sensation by fanning your fingers out and moving your hand faster back and forth.” – Excerpt from Beyond Satisfied by Kenneth Play, Chapter 7: Fingering, Different Strokes
