Authpaper QR Code Scanner

Scanner which verifies printed documents offline using authenticated QR codes

This application verifies the issuer and content of a document protected by the Authpaper technology by scanning QR codes on the document.

This scanner can also scan and create normal QR codes.

Authpaper provides an offline, cost-effective, secure solution for authenticating paper-based documents/credentials using off-the-shelf handheld devices such as smartphones and tablets.

The key idea is to use existing 2D barcodes, e.g. the QR-code, to carry a large amount of self-describing, and most importantly, authenticated data of all types containing text, image as well as other binary ones. By embedding the 2D barcodes as an integral part of a paper-based document, the authenticity of the document can be readily verified by comparing its content with the corresponding digitally-signed content contained in the codes.

Encrypted message and image can also be embedded into the codes.

The code verification process does not need the access of the Internet.

The only reason of declaring the Internet permission is to update the certificates of the issuers (so that we can verify the signatures).

If you find any problem, please inform us.