SmartStump Pro

• Law 8.1 says "three wooden stumps with two wooden bails" → rev D stumps are turned ash with a bored core, and match bails are ash with two magnets; the aluminium tube is gone
• Law 29.2.2: disturbing a bail is not removing it → a 1.27 mm lift is only logged; "clear" means the spigot rose a full groove depth
• WPL 2025 Zing bails lit at the slightest disturbance → nothing on the stump lights, and LED bails (only where allowed) light on clear only
• Bails must dislodge like wood → the match bail is 9.59 g against 9.26 g for plain ash, with the centre of gravity within 0.02 mm; no ferromagnetic part within 8 mm of a magnet
• Electronics fail mid-match → nothing mechanical depends on them, so the set plays as a normal wooden wicket
• Children on camera need consent → junior mode blocks streaming, clips and audio until consent is recorded for every child in both teams
• Phone apps can't sense bail lift or stump contact → SmartStump times exactly those and uses the club's camera as the camera
• Umpires already carry a counter → the band is that counter, synced to the scorer; it buzzes on ball 5, ball 6 and a clear event, never a verdict

Square-leg umpireScorerStream operator

1. 01Trigger: the keeper breaks the wicket as the batter dives
2. 02Detection: the Hall sensor under the groove logs the disturbance, then "clear" when the spigot has risen a full groove depth, on the set clock
3. 03Alert: the umpire's band buzzes; the scorer and stream get the event within about 90 ms. Nothing says OUT
4. 04Action: the OBS replay is marked at the clear frame; the umpire answers the appeal and judges the batter's ground from the frame or their own view

Outcome: The umpire judges a close run-out using the frame the bail picked, and the clip is on the stream within about 8 seconds