How live timing works in karting
From the transponder on the kart to the standings on a parent’s phone at the fence. What sits in between, and where it can go wrong.
Bryan Nijhof · 11 November 2026
The transponder
Under every kart sits a transponder, a small transmitter with a unique number. At the start-finish line, a loop in the asphalt picks up the number the moment the kart passes over it. If the transponder is loose or mounted at the wrong height, the loop misses it and the lap is lost.
The decoder and Orbits
The loop is connected to a decoder, which passes every crossing with a timestamp to the timing computer. That computer runs MYLAPS Orbits: the software that turns crossings into lap times, positions and gaps. Orbits knows which transponder number belongs to which race number, which is exactly why a correct entry list matters so much.
From Orbits to the app
Orbits can pass the live standings to other systems. Evenyo is a MYLAPS Partner and reads those standings directly, without an intermediate step or manual work. Within a second of the crossing, the new position is in the club’s app and on the paddock screen.
After the session
When the session ends, the result goes from Orbits to Evenyo. Race control checks it, applies any penalties and makes it official. Only then is it fixed in the app and does it count for the standings. Drivers never see a result that changes later.
Where it can go wrong
- A wrong transponder number in the entry list: the driver races under someone else’s name
- A flat transponder: no crossings, no times
- Two drivers with the same number in different classes on track at the same time
The first two you catch at check-in, the third when building the entry list. Evenyo checks at entry whether a transponder number has been used twice.