Sex sells and nobody knows that better than Durex. The biggest condom company in the world have come up with another wonderful piece of advertising in this innovative new campaign based around a steamy video. You download the app on iTunes or Google Play and it syncs up with the audio and the images within the video to release hidden content. The video teases you into wanting to see more and that is what the app gives you. Using sex to sell stuff in the best possible way because when you open the app you can then order condoms online and have them delivered to you. So smart.