The backyardworlds.org classification interface showing one frame of the flipbook in which WISEA 1101+5400 was discovered. The brown dwarf appears as a faint “dipole” at the tip of the white arrow. The other sources in the image are subtraction artifacts. Poisson noise and diagonal striping from electronic noise are also apparent. Distinguishing the brown dwarf from the artifacts requires viewing all four difference images in the flipbook by clicking the “play” button in the lower left or by clicking on the four radio buttons under the center of the flipbook.