Diagram of <a href="https://en.wikipedia.org/wiki/goal-line_technology" class="extiw" title="w:goal-line technology">goal-line technology</a> <a href="https://en.wikipedia.org/wiki/GoalControl" class="extiw" title="w:GoalControl">GoalControl</a>. Each arrow indicates all 14 hi-speed cameras pointing to the goal nets (7 on each side).
<a href="//commons.wikimedia.org/wiki/User:EuroCarGT" title="User:EuroCarGT">EuroCarGT</a>
<span class="int-own-work" lang="en">Own work</span>