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stem in sports: technology
Others worried that the games would slow
down with endless replays of every play, call,
score, or moment. However, as leagues have
added and perfected different systems, most
of that criticism has died away. Today, sports
are looking for more and more ways to give
officials video tools to make the right calls.
Electronic Eyes
O
fficials
use more
than
video
instant
replay
to
make sure that they make the right call.
The use of multiple cameras and elec-
tronic “eyes” has made the split-second deci-
sions by officials more accurate than ever.
Goal-line technology
used at the 2014
World Cup used
seven cameras;
(inset) if a goal was
scored, it flashed
on a screen worn
by the referee.