Project Locker has two parts, the first part leads the way two the second part. In the 1st part we enter the password and once it is given and if the password matches the the servo motor will turn and let us access to the 2nd part ( In the prototype picture there is no door like structure which will open, in the prototype the parts and it's working is only shown. ). In the 2nd part , the surrounding area has to be dark, in it there are two lights close to a ldr, one of the light has to be switched off manually and the other has to be blocked by a card. If there is no light around the ldr the solenoid lock opens or else if the ldr senses light then it is kept closed.