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Core Viewpoint - The article discusses the potential hazards associated with the CPC (Composite Pass Card) used at highway toll stations, particularly the risk of the card overheating and potentially exploding when placed near wireless charging devices [1][3]. Group 1: CPC Card Hazards - Users have reported incidents of CPC cards catching fire or exploding due to improper placement near wireless charging areas [1][3]. - The CPC card contains a microchip and metal components that can generate heat through the "eddy current effect" when exposed to electromagnetic fields, similar to how an induction stove operates [5][7]. - The plastic casing of the card has limited heat dissipation capabilities, leading to rapid temperature increases that can cause deformation, bulging, and in severe cases, explosion [7][8]. Group 2: Safety Recommendations - It is advised not to place CPC cards and mobile phones together on wireless charging pads or in strong magnetic field areas to avoid risks of overheating and fire [8]. - After receiving a CPC card, it should be stored in designated areas away from heat sources and wireless chargers to ensure safety [8]. - If a CPC card shows signs of overheating, deformation, or emits a burning smell, it should be returned to the nearest toll station for proper handling [8]. Group 3: General Safety Precautions - Other common items in vehicles, such as electronic devices with lithium batteries, lighters, carbonated drinks, and certain sprays, can also pose explosion or fire risks if not stored properly [8]. - The article emphasizes the importance of vehicle safety checks before travel to mitigate potential hazards [10].