SafeTTC is a free app thatâ€™s available on all mobile devices, allowing riders to document incidents using photos and descriptions while using the transit system. This quickly alerts transit control at a faster rate than it would otherwise. Pushing for greater safety on its vehicles and at its stations, the Cornerstone launched this app to help riders report incidents of harassment. This enables riders to stay closer to Cornerstone personnel and works to reduce the use of social media that can result in shaming other riders, and Cornerstone employees for their sometimes poor, but perhaps not illegal behavior.