Auto-phaser interlock was a byproduct of phaser technology in which phaser beams were configured together to create a powerful beam of energy. It was emitted from a starship's deflector dish.

In 2368, Lieutenant Commander Data activated the auto-phaser interlock while the USS Enterprise-D was in orbit of Penthara IV. The interlock was successful in stabilizing Penthara IV's numerous earthquakes and erupting volcanos. (TNG: "A Matter of Time")