The swift progress of technology in enhancing the security of mobile devices has resulted in the extensive utilization of personal identification numbers (PINs), passwords, and gridlock patterns to safeguard phones and associated social applications. Nevertheless, these conventional security measures are riddled with susceptibilities, such as password pilferage, memory lapses in authentication details, and user mistakes in grid pattern creation. To tackle these problems, a range of biometric methods, such as fingerprint and facial recognition, have been put into practice. Notwithstanding these progressions, there are nonetheless notable deficiencies in security. Due to the rising occurrence of cell phone incursions and theft, there is an urgent requirement for a strong security system that not only defends data but also shields the device itself. This study presents a resilient finger vein biometric security system as a more effective substitute for knowledge-based and password-based authentication techniques. The method employs infrared (IR) light transmission to capture the vein patterns and shadows resulting from the different thicknesses of finger muscles, bones, and tissues. Research on human finger vein biometrics suggests that every person has a distinct vein pattern, which enhances the level of security. The simulations we conducted indicate an identification accuracy rate of 93.82%, indicating that this technique provides a substantial enhancement in preventing unauthorized access and theft of cell phones.