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FlashWave Nowadays spectators in stadiums are using their phone flash light to do this" https://www.youtube.com/watch?v=2wWTD2WuN8g https://www.youtube.com/watch?v=hzfHmcDq_cg My idea is to co-ordinate the phone flashes and turn the entire stadium seating area into a giant screen or marquee - a digital mexican wave. So that messages can be displayed like this: https://youtu.be/HE_Jn2N3ty0?t=52s The app will determine a phone's location in the stadium using GPS and assign it a fixed position like a pixel in a screen. Once a critical mass of people start doing it in the stadium, it will viral and others will join in and install the app, increasing the 'resolution' of the screen. If the resolution gets really high then maybe even player names can be projected and move around the stadium like a marque. But even if the resolution is low, at the very least a coordinated wave of flashes can be created, like an arrow or a ball moving around the stadium. People will face the screen of the phone while the flash faces towards the ground. At any time 3 suggestions can be shown on the screen. For example let's take a Cricket match, three marquee message options would be 1) "India India" 2) "KOHLI" 3) "SIX". People can press the buttons and crowd vote in real time and whichever option gets the most votes will be displayed. Users can even type in suggestions and whichever suggestion gets most votes will become part of the 3 options. If taken to another level, a real time Matrix Bullet Time video https://www.youtube.com/watch?v=bKEcElcTUMk of the match can be captured. Imagine seeing a big moment of the match / the world cup winning hit frozen in 360 degree smooth motion.