About Signal XO

Signal XO is the instant visual play-calling system that eliminates miscommunication on the field. Coaches tap a play on their iPad, and four bold, unmistakable emoji-based picture boards appear on the sideline TV in under 100 milliseconds via WebSocket. Replaces outdated verbal calls, hand signals, and wristband codes that get misread in crowd noise. The 4-board system covers Formation, Motion/Shift, Front/Protection, and Concept — players read left-to-right instantly. Features include cloud mode with full admin dashboard, play history and analytics, plus a local WiFi-only mode that works without internet. Custom picture libraries with emoji and colors make signals impossible to confuse and resistant to opponent signal-stealing. Built for high school, college, and professional football programs looking to eliminate delay of game penalties, broken plays, and sideline confusion.