The FoxTenn line-calling system has already been used on the ATP Tour, at the Metz and Antwerp tournaments last fall.
It was approved last December by the joint ITF committee that rules on such things.
This week, the WTA announced it has approved FoxTenn for use on hard courts.
“After an essential testing period, we’re satisfied the FoxTenn system meets our criteria of accuracy and reliability,” WTA CEO Matt Cenedella said.
FoxTenn is supposed to be cheaper than Hawkeye. So hopefully that means more of the WTA’s lower-level events will invest.