Closed practices will take effect Saturday, August 13. The exception will be Fan Appreciation Day, set for Saturday, August 20, which begins with a 9 a.m. scrimmage at Royal-Texas Memorial Stadium.
Brown also cited a concern that opposing teams might benefit from bootlegged practice footage.
"Now, with the ability to video with a cell phone, and I didn't realize until yesterday that they can take a cell phone, video parts of practice and put it on the internet immediately," Brown said. "They can ship it anywhere in the league. We've got 10,000 active OU boosters here. And there's no telling how many Aggies. What we decided this morning is that, obviously, the times have changed. Media information gets out so much faster and fan information gets out so much quicker than ever before. There's really no way to have security any more. You can get the snap counts on the cell phones. That's not been an issue before but, there's no question, snap counts are huge. With your cell phone, you can start filming your signal callers. It's a different world. And I see people with notepads now coming to practice. It's just different."
Longhorn football practices, during the season, have been closed for several years. All workouts were open to fans and media just two seasons ago.
"Just about everybody else has closed practice," Brown said. "We're one of the few left that does not and we're probably wrong to keep it open. We feel like it's not in the best interest of our players' privacy or our team."
Friday's workout was open to fans and media. There were 123 spectators, according to UT Men's Athletics Official Bill Little. A UT security officer evicted a male spectator for videotaping midway through the session.
Saturday's sessions has been rescheduled for 10:30 a.m. to accommodate the UT Final Exams schedule.