Field guide
Infrared / RFID Card Reading
How it works
The use of hidden electronic devices to read invisible markings on cards or RFID chips embedded in cards, transmitting hole card information to cheaters in real time. Cards are marked with invisible barcodes or infrared ink on edges or backs. Hidden cameras in chip trays, phone cases, or clothing read the markings. RFID-enabled cards can be scanned by hidden readers. Information is relayed to the cheater via earpiece, phone, or vibrating device.
On the record
The 2025 federal indictment against the alleged mob gambling ring described “electronic poker chip trays, phones that could secretly read cards’ markings, and even specially designed glasses and contact lenses.” A 2025 Houston case at JokerStars Poker Room involved three players caught using RFID-enabled cards swapped into play with a concealed card reader.
Detection & preventionADVISORY
The paid halfHow a monitoring room catches infrared / rfid card reading, and what stops it recurring, written for the desk, not the reader.
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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.