Generating a report for the teacher

In the summary screen there is the possibility of generating a report for the teacher. The report is a PNG image with an Aztec Code. The report information is encoded in the Aztec Code as a JSON string. It contains:

• the gameset name;
• the list of answers;
• the percentage of correct answers;
• a timestamp;
• the version of the game;
• a hash code with the previous information.