One sport that has so far resisted the use of high-tech assistance is soccer (football). It is about time they got with the 20th century. They can’t avoid the power of the people and the power of the TV replays to upgrade their sports.
There are multiple ways that technology could help the refs. How about replays being used to adjudicate off-side decisions, whether a ball passes over the goal line, and to clarify penalty decisions? An off-field referee could communicate with the umpires on the field using wireless technology.