León Hernandez is an electrical engineer with a degree from the University of Antioquia, Colombia. For the past two years he has engaged in entrepreneurial activities with his partner Daniel Cano, and now they are focused on the startup Cautoh, offering a product that benefits users and the community in general. There are times when people drink in moderation such as in restaurants, social gatherings or even in business meetings. They may wonder if they should drive or not, or how much time must elapse before they can. This is the problem that Cautoh is seeking to resolve. It is one that affects not just the person who drinks but society in general if that person turns out to be a danger to other drivers. Hernandez and Cano developed an alcohol measuring device that is integrated into cellphones in order to tell people their blood alcohol level at any given time. It also provides information on alternative transport options like taxis or designated drivers so as not to put themselves or others at risk. Cautoh feels that drunk driving is a problem that should be tackled not just with punitive measures but also with prevention, giving people the ability to make decisions based on accurate information. They have made the app available for free so that people can calculate their blood alcohol level by entering into the phone data on how much they have drunk and their body weight. So far there are 100 satisfied users. Cautoh hopes to expand through the rest of Latin America.