I had this urgent necessity, and suddendly realize that wasn’t just me. My brother and my parents, my girlfriend and her parents too, they all have this urgent necessity too know where their mobile phones are. Not because their are lost, but because they don’t konw where they have put him in house, or dropped him in the car, and almost of the time they are in a hurry. So I developed a questionnaire and apllied to almost 300 people and realize that the majority of people had the same problem. After that I developed a paper low fidelity prototype, wich were then passed to POP App and to Invision and Marvel prototypes. With this prototypes I performed testes with users. I had great results and good feedback, and now I’m looking for app developers.