The NFL has cracked down on the use of electronic devices during games this season.

According to sources, the league has imposed fines in 2022 for violation of the electronic device policy. In all, 12 teams and three players have been fined this year.

In a reminder sent to all teams on December 2, the NFL explained to all teams that it has "observed several electronic device policy violations this season."

The policy prohibits coaches and players from using, wearing, or having in their possession any electronic device (phone, Apple Watch, laptop, tablet, etc.) that is not league issued.