Published on in Vol 8, No 3 (2020): March
![Prevention of HIV and Other Sexually Transmitted Infections by Geofencing and Contextualized Messages With a Gamified App, UBESAFE: Design and Creation Study Prevention of HIV and Other Sexually Transmitted Infections by Geofencing and Contextualized Messages With a Gamified App, UBESAFE: Design and Creation Study](https://asset.jmir.pub/assets/736628995a2467334d3417bdc38a77c2.png 480w,https://asset.jmir.pub/assets/736628995a2467334d3417bdc38a77c2.png 960w,https://asset.jmir.pub/assets/736628995a2467334d3417bdc38a77c2.png 1920w,https://asset.jmir.pub/assets/736628995a2467334d3417bdc38a77c2.png 2500w)
1 School of Videogames Development and Virtual Reality Engineering, Faculty of Engineering, Universidad de Talca, Campus Talca, Chile
2 Internet Interdisciplinary Institute, Universitat Oberta de Catalunya, Castelldefels, Spain
3 Faculty of Computer Sciences, Multimedia and Telecommunication, Universitat Oberta de Catalunya, Barcelona, Spain
4 Epidemiologic Service - Public Health Agency of Barcelona, Plaça Lesseps 1, Barcelona, Spain
5 Foundation of the Tuberculosis Research Unit of Barcelona, Barcelona, Spain
6 Biomedical Research Network on Epidemiology and Public Health (CIBEResp), Barcelona, Spain
*these authors contributed equally