Simple but useful: Netball Australia uses an electronic device worn on the wrist to alert the officials when time has elapsed at the end of the match.

The device simple sends a signal and beeps and vibrates. They call it the "Dick Tracy watch".

The device, based on the common pager, costs about $1300 and has been developed by a Sydney electronics company, on specifications created by Netball Australia (I guess you think it's expensive, right? Me too until I saw that they produce it in very limited numbers and developed it from the scratch.)

As in Australian football, a netball match is officially ended on the umpire's whistle rather than a final siren. ... All parties are confident it could be adapted for all sports, including AFL.

Australian netball is ready to cooperate with football (soccer). Will the FIFA answer?