Each World Cup, the sportswear giant Adidas ... to kick the ball way down the pitch," Goff says, "are going to notice a slight difference in range compared to the 2014 ball" — about 8 or 9 ...

Using Bluetooth sensors suspended inside, Adidas is able to provide in its app immediate feedback about a kick's speed ... The regular 32-panel, size 5 ball has 12 separate Bluetooth sensors ...