Mentalism without props

What's the name of the trick where a spectator extends their arms and closes their eyes, the mentalist touches one of their arms and the spectator says "now", but later the mentalist goes to touch the arm, doesn't actually touch it, and the spectator with their eyes closed still says "now" without being touched?

It's in this video around the 11:50 mark.

https://youtu.be/pIcAW9BgrTQ?si=CM70H-mydQveVosg