Smart door access control system based on QR code

<p>Wirelessly based security applications have exploded as a result of modern technology. To build and/or implement access control systems, many types wireless communication technologies been deployed. quick response (QR code) is contactless technology that extensively utilised in variety sectors, including control, library book tracking, supply chains, and tollgate among others. This paper combines QR code with Arduino Python to construct an automated code-based management system. After detecting code, the scanner at entry collects compares user's unique identifier (UID) UID recorded The results show this system capable granting or denying protected environment timely, effective, reliable way. Security systems can protect physical intellectual property by preventing unauthorized persons from entering area. Many door locks, such mechanical electrical were created meet basic needs but it also helps create data files structure authorized persons.</p>