HOUSTON CHRONICLE - Aug 14 - When the doors open at some University of Texas fraternity parties, young men and women need to hand over two items: a state-issued ID and their phone, with their Tinder University profile pulled up. If the students do not have a Tinder U profile, they are asked to create one even if they are in a steady relationship. No app, no entry. Fraternities are deciding whether they're a Bumble house or a Tinder house, and signing exclusive contracts. The dating apps provide money to cover production costs for parties, branded signage and swag. The frats provide access to thousands of potential new users Tinder and Bumble declined to specify the scope of their campus involvement, though both said their apps have college marketing events across the country. But there's a difference between promoting your app and forcing someone to become a user, said Millie Lopez Stuessy, whose daughter attends UT. "I have a problem with that, because I don't think that should be necessary to enjoy the event," Lopez Stuessy said.