Today more and more people rely on mobile phones as their primary phone service and are disconnecting wireline service altogether. As a result, more 9-1-1 calls are being placed from mobile phones than ever before, including inside buildings where traditional 9-1-1 mobile phone location technology does not work well. New location technology solutions are emerging that make calculation of indoor positions for mobile phones during a 9-1-1 call possible, and include major technology announcements from both Apple and Google in 2018 in this area. The ability to track mobile phones indoors during 9-1-1 calls will create new demands for 2D and 3D indoor GIS maps for 9-1-1 call takers, dispatchers, and emergency responders. This session will explore these new innovations in the 9-1-1 world, and discuss their impacts to GIS