Development in technology increased the use of technology based implementations functionally. One of these implementations is Bug-in-ear (BIE). It is a kind of coaching which aims to provide feedback to the implementers immediately during their implementations via small, wireless communication materials. BIE is one of the implementations which can be used effectively for teaching acquisition, maintenance, and generalization of various skills and behaviors by teachers, teacher candidates and support personnel with a high rate of procedural fidelity. In this study, it is aimed to describe BIE which is being used for more than half century, how it can be implemented, advantages and limitation of its usage in educational settings, and to make explanations about some of the research studies regarding the usage of BIE in special education. Lastly, some suggestions are provided to implementers and researchers about the use of BIE in special education field.