Please ensure that your devices meet the following requirements: Operating system: Microsoft Windows 8.1 or higher, or Mac OS X 10.11 or higher Browser: The latest version of Google Chrome Internet connection: We highly recommend an Ethernet connection for better stability or a download/upload speed of at least 2 Mbps Camera: External or built into the computer Sound system: The audio must come out of your computer. Headphones or headsets are not authorised and will lead to score cancellation. Smartphone: Android 5.1 or higher or iOS (Apple) 10.0 or higher. Your smartphone must have a Wi-Fi connection. Note: Huawei P30, Samsung Galaxy A3 (2016), Google Pixel 3 and newer are not compatible. Please make sure that all apps on your computer are completely closed before the beginning of the test.