This paper deals with the weak points in Wi-Fi's wireless communication and the improvements in blockchain and various problems. Also, the concept and characteristics of blockchain are reviewed to deal with the direction of overcoming vulnerabilities in the use of open blockchain and certain blockchain services in order. Also, the Wi-Fi system, blockchain system, and blockchain application methods are studied in advance [4-6]. 2.1. Wi-Fi Wi-Fi is a technology that allows electronic devices to connect to a wireless LAN (WLAN), mainly using the 2.4 gigahertz (12-centimeter) UHF and 5 gigahertz (6centimeter) SHF ISM radio bands. Although wireless LANs are generally password protected, they are also open to any device located within the band to access the resources of the wireless LAN network. Wi-Fi Alliance