Brain computer interface technology is a rapidly expanding area of research that is used in various application systems. The contributions of this technology in the medical field encompass a wide spectrum, including both preventative measures and the rehabilitation of severe brain damage. Mind reading and remote communication have distinct characteristics that are evident in various domains, including education, self-regulation, production, marketing, security, as well as gaming and entertainment. It fosters mutual comprehension between users and the surrounding systems. Several application fields might utilize brain waves to facilitate or accomplish their objectives. In addition, there are several significant usability and technological obstacles that arise when utilizing brain signals in different components of a BCI system. The book covers several topics related to Brain computer Interface systems and technologies, and is intended to be used by undergraduate, postgraduate students, researchers and people working in industries interested in knowing more in this field.