I've read alot about being able to stop your heart with control but can you only do that with the hearing method...when you hear it stop or can someone put their hand over your heart and feel it stop?...like the arm pulse in the trailer.
Wayne's method is on the wrist. Danny's is a heart stop in which the spectator hears your heart stop. No they cannot put their hand on your chest and feel it stop.
They would have to push fairly hard to even feel the heartbeat. That would make you uncomfortable. Just hold their head against your chest and they should hear it loud and clear. No need for further verification...