  Recent advancements in robotics have led to the development of numerous
interfaces to enhance the intuitiveness of robot navigation. However, the
reliance on traditional 2D displays imposes limitations on the simultaneous
visualization of information. Mixed Reality (MR) technology addresses this
issue by enhancing the dimensionality of information visualization, allowing
users to perceive multiple pieces of information concurrently. This paper
proposes Mixed reality-based robot navigation interface using an
optical-see-through MR-beacon (MRNaB), a novel approach that incorporates an
MR-beacon, situated atop the real-world environment, to function as a signal
transmitter for robot navigation. This MR-beacon is designed to be persistent,
eliminating the need for repeated navigation inputs for the same location. Our
system is mainly constructed into four primary functions: "Add", "Move",
"Delete", and "Select". These allow for the addition of a MR-beacon, location
movement, its deletion, and the selection of MR-beacon for navigation purposes,
respectively. The effectiveness of the proposed method was then validated
through experiments by comparing it with the traditional 2D system. As the
result, MRNaB was proven to increase the performance of the user when doing
navigation to a certain place subjectively and objectively. For additional
material, please check: https://mertcookimg.github.io/mrnab
