Bluetana App allows detecting Bluetooth card skimmers installed at the gas pumps to steal customers credit and debit card information in just 3 seconds on average. Researchers from UC San Diego and the University of Illinois have developed a mobile app that allows state and federal inspectors, and customers at gas pumps, to detect Bluetooth-enabled skimmers. The app scans nearby Bluetooth devices every 5 seconds using Androids Bluetooth API. When a potential skimmer is detected by the app the users is alerted.”]
Source: https://securityaffairs.co/wordpress/90050/cyber-crime/bluetana-bluetooth-card-skimmers.html