Bike or Car security is top priority of all concerned. Today there are plenty of car or bike security products to ensure your security completely. Security is a prime concern in our day-today life. Everyone wants to be as much secure as possible. Bike security is the most significant one for every owner. For that different security systems are available. Many times we hear the cases of bikes getting stolen from parking area. Or sometimes we forgot to remove the keys from bike by mistake. In these cases it is really difficult to get the bike back. This project is designed to solve this purpose. Main concept behind this project is of a bike security system using a password entered through Android mobile. This project turns on a Buzzer when entered password is wrong. An access control for bike forms a vital link in a security chain. The microcontroller based bike locker is an access control system that allows only authorized persons to access the bike