Body language is one of the nonverbal methodsof communication, and it comprises hand gestures, arm movements, posturing, and gestures and facial expressions. One way to communicate information through the movement of the body is through gestures. HGR is a smart, intuitive, and easy method of human-computer interaction (HCI). HGR systems have two key applications: SLR and GBC. To help the deaf communicate with the hearing community, SLR tries to automaticallyinterpret SLs via a computer. The idea that SL is a highly ordered and primarily symbolic collection of human gestures is what led to the development of universal gesture-based HCI.