MaskCheck by COVID-19 International Research Team is a mask detection app created to encourage and track the use of face masks for improved public health in shared spaces. It uses the power of AI through computer vision to automatically, quickly, and safely determine if a person is wearing a mask or not. If a mask is detected, the app can also determine if the mask is worn appropriately (covering both mouth and nose) or if it needs to be adjusted. MaskCheck is designed to be used via a mounted mobile device or tablet as a self-service automated mask detection kiosk wherever mask use is required or encouraged.