Part I: Card Game Cheating · Collusion & Electronic Cheating at Card Games · #2.27
Smartphone App Collusion (Concealed Use)
How it works
A player hides a smartphone on their person (in a pocket, on their lap, in a bag) and uses it to receive real-time information during play. This may include text messages with hole card information from a confederate, access to a hacked shuffler’s camera feed, consultation of strategy charts or solvers, or communication with an external advisor. Players may pretend to check messages while actually receiving critical game information. In livestreamed games, a player might access the stream with a delay to see opponent hole cards.
Where it appears
Poker (especially livestreamed games), all card games
On the record
The 2019 Stones Gambling Hall case turned on a player repeatedly looking into his lap during streamed hands; accusers alleged a phone was relaying hole cards. The allegations were never proven — no charges, and the civil class action dismissed in 2020 — but the episode changed policy: the 2025 WSOP electronic-device rules explicitly ban charts, apps and electronic assistance in tournament areas.
Detection & prevention
The paid halfHow a monitoring room catches smartphone app collusion (concealed use), and what stops it recurring — written for the desk, not the reader.
Detection · 40 words
Prevention · 42 words
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.