Part II: Table Game Cheating · Roulette Cheating Methods

Scam #26: Smartphone/App-Based Prediction System

How it works

Modern smartphones have made roulette prediction accessible to a much wider audience. Specialized apps use the phone’s camera to track the ball and wheel in real-time, applying computer vision algorithms to calculate velocities and predict landing zones. The user simply holds the phone in a natural position, points the camera at the wheel, and the app does the rest — processing video frames, identifying the ball, tracking its position, and outputting a prediction through the phone’s audio (earpiece) or vibration. Some apps claim to use machine learning and neural networks trained on thousands of spin videos to improve accuracy. Because smartphones are ubiquitous in casinos, these apps are particularly difficult to detect — the user appears to be a normal player casually checking their phone. The apps can be distributed through underground forums or encrypted messaging platforms.

Where it appears

Physical roulette wheels; any casino that allows phones near the gaming floor

On the record

The proliferation of smartphone-based prediction apps has been a growing concern since the early 2010s. While many advertised apps are scams that don’t actually work, legitimate computer vision-based prediction is technically feasible and has been demonstrated by researchers. The low barrier to entry (just download an app) makes this a threat even from amateur cheaters.

Published as a detection reference for surveillance, compliance and gaming-operations professionals. Thresholds and tuning are set by the property. Nothing here is instruction — the method is described so it can be recognised.