Smart posters are a promising new use case for NFC-enabled mobile devices, however so far there has been a general lack of security mechanisms for NFC/QR-Code good posters. we tend to gift S-SPAN - a secure good poster system consisting of 3 parts: associate degree body net interface for managing posters, a backend server for storing and serving information, likewise as associate degree mechanical man application for end-users. S-SPAN enforces and integrity of good poster information likewise as authentication/authorization of directors and end-users, therefore making certain that solely licensed users will access the content. This project is beneficial for school assignments. it's terribly secure technique to share assignments with students.