• D. Lakshmi Raghavi
• K.Raja Sekhar
• B.Yaswanth
• K. Nikhil Venkata Sai Krishna
• L N B jyotsna

In recent days home security and remote monitoring have become necessary and most important with the drawn of new concept like internet of things and development of advanced authentication and security technologies. The door lock security system was designed in a simple and easily installable device that was build by using Raspberry Pi, Web Cam and servo motor.The system designed in this project can be installed at the main entrance of a house. The system starts capturing the images with the help of a USB web cam. If the visitor tries to scan the QR code and fails to enter correct password more than three times, the web cam captures the photos of the visitor and sends the images to the owner through email which he can check through his smart phones and also there will be a buzzer or alarm which rings when the three attempts fail. If the visitor enters the correct password the door is opened using servo motor.

Quick Response system, Raspberry Pi, Servo Motor, USB web cam.

"IOT BASED SMART DOOR LOCK SYSTEM USING RASPBERRY PI, 2D BARCODE SCANNING AND SERVO MOTOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 7, page no.b831-b835, July-2021, Available :http://www.jetir.org/papers/JETIR2107239.pdf

"IOT BASED SMART DOOR LOCK SYSTEM USING RASPBERRY PI, 2D BARCODE SCANNING AND SERVO MOTOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 7, page no. ppb831-b835, July-2021, Available at : http://www.jetir.org/papers/JETIR2107239.pdf