Major League Baseball said Monday that there is no league-wide mandate on the new security. The Pittsburgh Pirates began using the system in June. The NBA's Golden State Warriors, whose arena shares the same parking lot with the Coliseum, already have been using walkthrough metal detectors.
The A's said fans will have their bags searched and will need to empty pockets of keys, cellphones and other items before walking through a metal detector. The team has not changed any of its current policies on carry-in items but recommends allowing for extra time to pass through security.