Combining Near Field Communication (NFC) technology with Secure Hash Algorithm (SHA) 256-bit encryption into smart homes may offer new opportunities to improve the security and usability of today’s homes. The goal of this paper is to explore a new way to automate home functions using NFC to authenticate users and share information seamlessly, while also using SHA 256-bit for secure encryption of sensitive information. By using this combined technology, homeowners will be able to securely operate their smart home devices through NFC-enabled Smartphone’s or wearable devices rather than having to remember complicated passwords or use complicated authentication methods. Because all communications between each user’s device and the smart home hub will be securely encrypted with SHA 256, protected from unauthorized access or tampering, the transferred data will be both confidential and have its integrity preserved. Additionally, because of the flexibility of the described system, it will be possible to easily integrate existing smart homes into a single platform and support users in many different applications, such as home security, energy management, remote monitoring, etc. Performance testing and validation will continue throughout this process. Then we demonstrate the way technology presented in this paper has improved both security and user experience in a smart home environment. The research presented will advance the technology used in smart homes through the use of NFC with SHA-256-based hashing for integrity and authentication to create a stable and user friendly method for providing security, as well as efficiency, in home automation.