AR Magic Lantern: Group-based Co-Located Augmentation Based on the World-as-Support AR Paradigm

We present the AR Magic Lantern, an augmented reality flashlight that enables its holders to see and interact with situated virtual content that it projects onto the physical surfaces around them. The AR Magic Lantern tracks its position and orientation, so the projected content is truly a part of the physical space and is thus relevant for all members of a group. This makes it especially suitable for implementations of the World-as-Support AR paradigm, where augmented experiences should be shared and situated. We contribute the design principles and methodology used in the development of the hardware and software of the AR Magic Lantern. We also describe the interactive AR experience that we developed for a local cultural heritage site and which will be demoed during CHI 2022.