At step 230, the fingerprint scanner 10 can activate a third signal when the fingerprint scanner 10 successfully captures the fingerprint image. In this embodiment, the fingerprint scanner 10 can continuously activate a light using a third color when the scanner 10 successfully captures the fingerprint image. Once the fingerprint scanner 10 determines that it has captured an image of the fingerprint, it can illuminate a solid green light. The green light can be generated by the same light that produced the yellow light and/or the red light; or it could be a separate light. Using the example discussed above, the thumb light 36 can stop generating the yellow light and transition to a constantly-illuminated green light to convey that the fingerprint image—in this case the fingerprint image of the right thumb—has been captured. While the right thumb light 36 may be green, other lights representing other fingers that have not be processed to capture fingerprint images can be illuminated by a solid red light. The method 200 proceeds to step 240.