Security is very important in today's world. Even though there are various approaches, there is no solution that will restrict the access to only users in a secure and effective manner. With the advancement of technology, this system suggests an alternative strategy to the traditional process that is based on the internet of Things and application. The Smart Locker System is an inventive and cutting-edge technical solution created to improve convenience, security, and effectiveness in a variety of settings including businesses, residence complexes, retail malls, and more. For a seamless and safe user experience, this system combines contemporary technology including the Internet of Things (IoT), mobile applications, and electronic locking mechanisms.