-Increasing of positive identification information leaks and server breaches in recent years, issues of internet authentication highly required. Two-factor authentication, despite being safer and powerfully promoted, has not been wide applied to Internet authentication. Investment the unprecedented quality of each personal mobile devices (e.g. smart phones) and bar code scans through camera, CamAuth tend to explore a replacement horizon within the style house of twofactor authentication. CamAuth is an Internet authentication theme that exploits pervasive mobile devices and digital cameras to counter varied countersign attacks as well as man-in-the-middle and phishing attacks. In CamAuth, a mobile device is employed as second authentication to vouch for the identity of a user log in from a computer. The device communicates directly with the computer through the secure visible radiation communication channels that incurs no cellular price and is proof against frequency attacks. CamAuth employs public key cryptography to confirm the protection of authentication method. Our analysis results indicate that CamAuth could be a viable theme for enhancing the protection of internet authentication.