FIFA on Tuesday ordered goal-line technology companies to take out insurance coverage in case clubs or leagues take legal action over any system failures.
Hawk-Eye and GoalRef Tuesday were cleared to install their systems worldwide after being granted licenses by FIFA.
But the companies have had to provide insurance so that if the systems fail -- either failing to spot the ball has crossed the line or registering wrongly that the ball was over the line -- they are covered if legal action is launched against them.
The insurance would also cover any claims if a player or official says they have been injured by the equipment.
The granting of the licenses means the systems can now be installed in stadiums, after which they will undergo a final inspection by an independent test institute before being allowed to function.
The first competitive tournament using the systems is expected to be FIFA's Club World Cup in Japan in December.
Meanwhile, German company Cairos is developing a third system and will seek approval by the International FA Board at a meeting in Scotland in March.