Overview
- The device debuted Thursday in Nacional’s 3-0 win over Rentistas when referee Eduardo Varela used a smartphone‑like tool to show electronic yellow and red cards.
- The gadget lets an official press a yellow or red button, select a player number and record substitutions, penalties and other incidents in real time.
- Events recorded by the device were transmitted directly to the AUF’s COMET match‑management system, removing the need for paper notebooks and manual postgame entry.
- Tests and the debut exposed visibility and luminosity problems, with a prior trial postponed by bright sunlight and stadium reports saying the screen was hard to see at distance.
- The system was built over three years by Uruguayan firm REFe with private funding and AUF collaboration, and AUF officials say developers must fix technical issues before any wider rollout or integration with VAR and broadcasters.