The only existing method of therapy supervision that provides on-line feedback to trainees is the "bug-in-the-ear," an auditory communication system. Although this system has several advantages over supervision strategies that use retrospective accounts, audio-and videotapes, and direct observation of sessions, it is disruptive to the trainee and must be limited to strategically timed three-or four-word communications. We describe and discuss advantages of the "bug-in-the-eye," an alternative to the bug-in-the-ear, which provides visual on-line feedback for therapist skill training.