USGA officials are allowing mobile phones on the course during this week's U.S. Women's Open at Blackwolf Run, letting fans stay connected despite the risk of a ring disrupting a player's backswing.
The USGA has not allowed fans to bring phones to major championship tournaments in the past.
The USGA's Ben Kimball says allowing phones is going to be a new experience, "But we hope it's going to be a pleasant one."
Fans must set phones to silent or vibrate mode and may only place or receive calls in designated areas. Recording is not allowed, while photographs may be taken only during practice rounds. Fans may use other phone functions at any time, except when a nearby player is addressing the ball or swinging.