Fingerprint is aidentification pattern for humans, which comprises of a pattern of ridges onthe finger that helps to grip things by hand. Based on the pattern of ridgesand valleys of human fingers it can be recognized and matched with thepre-stored patterns. It consists of sensors that are optical, ultrasonic,thermal, capacitive, etc., but mostly optical and capacitance scanning methodsare used.
In this project, a fingerprint module is interfaced to amicrocontroller with a serial interfacing, and this project uses a relay, anLCD. This type of authentication for controlling devices and appliances ishighly secured and more reliable at a lower cost due to inexpensivemicrocontroller. This can also be implemented as the main registration systemfor computer centers in colleges and offices by adding external memory. The workingof this project involves three stages which are mainly registering the userfollowed by the user authentication and finally turning ON the computer for theregistered user. The drawbacks of the previous system are mainly the time consumedwhile the user registers and also time taken for turning on the system.
Thefeasibility of the project comes right from the authentication procedure whichguarantees secured access and also it prevents any confusion regarding whichuser occupied a particular system. By the help of secured access we can be ableto curb all the drawbacks of the present system. It helps in numerous ways likereducing time consumption and also decreasing the work done in registeringevery time while entering the laboratory. The processing of this projectcommences from the registration followed by the control send by the controllerto the pc displaying the user entry and also it is the job of the controller toturn on relays for the turning ON the systems. The registration of the userwill be done with the help of fingerprint module and done only once for theuser.
Hence with the entry of the authenticated user the system is allocated tothe user and also the PC is turned ON for the usage.