Duolingo launches new ear-scanning technology at DETcon.
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Duolingo launches new ear-scanning technology at DETcon. The Duolingo English Test (DET) has revealed its patent-pending ear scan technology that uses the DET's mobile app to detect hidden earbuds being used to cheat exams. June 11 2026 Sector leaders gathered at DETcon to discuss integrity issues in international admissions. Image: Duolingo The new security product was launched at DETcon London 2026, at the University of London, marking a new innovation in test security and fraud prevention in high-stakes language testing. The use of earbud devices to cheat in exams is on the increase as the technology becomes more readily available. Stealth receivers can stream pre-recorded audio notes or real-time, two-way communications with an accomplice or AI tool outside a secure test room. While standard consumer earbuds are easily spotted, tech-savvy fraudsters are using micro-sized spy earpieces the size of a grain of rice that fit entirely inside the ear canal, making them completely invisible to exam invigilators. Duolingo's new ear scan technology uses the DET mobile app to collect sensor data while the phone is held close to each ear and then deploys an algorithm to detect hidden earbuds. Under the theme "securing the future of international education in a new world order", delegates attending DETcon 2026 were able to handle the new technology and talk to cybersecurity...
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