Watch the Tapped Harmonics online guitar lesson by Chris Buono from 60 Electric Guitar Techniques You MUST Know
Whether it's single notes or chords, tapped harmonics can be achieved by tapping an appropriate distance above open or fretted notes in a way that's more like bouncing off the neck. When done correctly, you'll activate a harmonic with a unique type of attack.
Looking for inspiration? Check out Tuck Andress and Eric Johnson for tapped harmonic chordal instances that sound like they've unleashed a bottle of compressed kinetic energy waiting to explode. If you need a single note example, dig out your copy of Van Halen II and cue up "Women in Love".