Under the Laws of cricket, a bail is completely dislodged only when the bail comes entirely off the groove. The BCCI has used the Zing brand of bails both in bilateral and domestic cricket ...

The BCCI has used LED bails both in bilateral and domestic cricket including the IPL and WPL. Each bail contains a microprocessor that detects the moment when both spigots have come off their grooves.

This is happening even when the bail spigots have not come off the top of the stumps. The Indian Board uses LED Stumps in international and domestic cricket. There is a microprocessor on each bail.