DualCheck (IMAGE) University of Tokyo Caption When a website needs to verify whether a user is in fact a person, it could present the user with a couple of questions like these for the user to answer. As they use their mouse or pointing device, the movement can assure the website the user is human, and the user is rewarded with some knowledge that will hopefully help them use the internet in a safe and secure manner. Credit ©2022 Yatani et al. Usage Restrictions Credit ©2022 Yatani et al. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.