In this review, we discuss how information transmission influences the self‐organized aggregation behavior of swarm robots. As a fundamental behavior observed in many collective systems, aggregation has been widely studied with collective robots equipped with programmable motion and local interaction capabilities. These robots gather group‐level information through communication or physical interactions, adjusting their movements accordingly, and ultimately achieve aggregation. In this review, we focus specifically on local interactions regarding information transfer. Previous studies are categorized based on the usage of the transmitted information. We summarize the information transmission strategies employed by collective robots to facilitate aggregation. Additionally, we highlight the current challenges in the field, discuss potential directions for future research, and outline several possible applications.
Leng et al. (Sun,) studied this question.