Brazil's World Cup spectators are in for more than its 60-year-awaited return to the country. These half-million lucky fans will also be witnessing robots, disappearing paint, and a few other new tech additions. Here are a few. Pretty impressive. 1. GoalControl. This newest goalline technology is one hundred percent accurate and "unhackable." At least with the 10,000 shots tested. The referee will still have the last call, but we can expect many less bad ones. Rest easy, Lampard.

2. iRobot 510 PackBots. These robots will be checking packages and boosting surveillance at this year's twelve venues. They look a lot nicer than turrets or security guards, but I wouldn't be too sure.

3. Vanishing spray. It will be used to mark off free kicks (and spray-paint lude cartoons in the grass, obviously) for sixty seconds before--you got it--vanishing into thin air. This nifty stuff is produced and licensed by the Argentine company "9.15 Fair Play Limit." Thinking about purchasing some myself.

4. Brazuca Ball. Designed by Adidas, tested and retested for the last two years. In fact, it's the most tested ball of all time. This thing is meticulous.

5. 4k broadcast. Yeah, that's four times the resolution of 1080p. Another FIFA first.

Watch all these in action at the first match today at 4, Brazil vs. Croatia.