Samsung have built the SLSA a technological tool box to ensure the app reflects current beach conditions. At the beginning of patrol, lifesavers will program the app with any present hazards and they are able to update it throughout the day.
Then visitors, once they have the app downloaded, can visit a signposted beach checkpoint to sync the app with any rips, as programmed by the lifesavers. When looking at the app, the smartphone's camera will show the actual beach with computer-generated signposts superimposed, as well as facts and strategies to avoid danger.
See the full story here: http://uploadvr.com/snapchats-toy-glasses-dominance/