1. Goal Line Technology
Logan Mudlo

2. Road Map What is goal line technology? Why is it needed?
Famous occurrences of missed calls
Four different types of goal line technology
Wrap-up/Conclusion

3. What is goal line technology?
A method used to determine when the ball has completely crossed the goal line with the assistance of electronic devices and at the same time assisting the referee in calling a goal or not.

4. Why is it needed? Disallowed goals have negatively impacted big games
It would make referee’s calls easier
It would eliminate controversial goals

5. Famous Occurrences 2000 African Cup of Nations
Manchester United vs Tottenham in 2005
2009 Crystal Palace vs Bristol City
2010 World Cup: England vs Germany
2011 FA Cup: Chelsea vs Tottenham

6. Goal Line Technologies

7. Goal Minder Founded by Harry Barnes and Dave Parden
Uses cameras that are mounted on the goal posts
Only gave visual evidence
Cheapest of the four goal line techs

8. GoalMinder: Pros and Cons
Very inexpensive
No digging up of the pitch
Cons:
Only works with visible balls
Takes up to 5 seconds

9. Cairos GLT System Cairos Technologies Uses four major components
Magnetic Field
Sensors
Receivers
Referee

10. Cairos: Pros and Cons Pros: Cons: Returns signal in 1/10 of a second
Ball doesn’t have to be visible
99.9% correct
Cons:
Only compatible with Adidas balls

11. GoalRef Founded by Peter Mikelson Very similar to the Cairos System
Uses same magnetic field sensors
Coils are added to goal frame
Creates a “light curtain” within the net
Sensors are placed between inner ball and leather

12. GoalRef: Pros and Cons Pros: Cons: Instant verification to referee
Ball can be hidden
Can be used with any ball
Cons:
Not great for TV

13. Hawk-Eye First developed in 1999 by Paul Hawkins
Already in use during tennis and cricket matches
Uses six high speed cameras to triangulate the ball
Produces a graphical image of the flight path

14. Hawk-Eye: Pros and Cons
Graphical image for TV
Cons:
Ball has to be 25% visible
High installation costs

15. Conclusion Goal line tech will drastically help officials
Eliminate missed calls that affect the game
Use magnetic fields and cameras
GoalRef and Hawk-Eye are the two best candidates

16. References "Football." Hawk-Eye. N.p., n.d. Web. 25 Mar. 2013.
"GLT System." Cairos Technologies. N.p., n.d. Web. 25 Mar
"Goal-line Technology." Wikipedia. Wikimedia Foundation, 24 Mar Web. 24 Mar
"Goalminder Technology." Goalminder. N.p., n.d. Web. 25 Mar
"Hawk-Eye v GoalRef: The Pros and Cons of the Over-the-line Systems FIFA Are Testing." By Martin Lipton. N.p., n.d. Web. 25 Mar