I have honed in on my ideas and have decided to focus my attention on the film rating system, and particularly 12a ratings due to the current transparency.
I am going to probably use QR tags to trigger the information popping up on perhaps a phone or other smart device, which can be placed on a poster, trailer, or any other promotional material.
I am going to continue my research by looking into epilepsy, and PTSD and what could potentially trigger these within films, and tailor my system to suit these.
Might be also worth looking into NFC and iBeacons as another method of transferring info / data to phones