A frame marker is a special rectangular marker with an embedded code in its border. The inside region can be filled with any type of image so that the user can identify the marker visually. Frame markers can be smaller than Image Targets and may be

cloudreco-3-0-7.unitypackage cylindertargets-3-0-7.unitypackage framemarkers-3-0-7.unitypackage imagetargets-3-0-7.unitypackage 等等等等