[maxo99]

Same here. And considering football already has radios in helmets, I'm sure it'd be an easy enough add that they must be avoiding doing the same

[happymellon]

They already contain radios in the gum shields, and have done for a while.

This is an additional piece to flash red if a concussion level impact occurs, so that medical staff can see faster than the bluetooth signal can sometimes transmit. Referees and audience can also see, so it helps provide more information for everyone.

No one has avoided anything.