https://www.kcci.com/article/mlb-players-to-wear-electronic-tracers-or-face-discipline/35461012MLB players to wear electronic tracers or face discipline This report comes from a TV station in Des Moines, Iowa. Major League Baseball players, on-field staff and non-playing personnel who require access to them at ballparks must wear electronic tracing wristbands from the start of spring training and face discipline for violations. I think this particular rule is going to be ignored by many players: Players, on-field staff and non-playing personnel who require access to them may not during spring training, the season or the postseason go to indoor restaurants, bars, fitness centers, casinos or any indoor gathering of 10 or more people.