On iOS and iPadOS, apps that you grant access to Camera can access real-time images from the front and rear cameras. Apps aren’t allowed to use the camera without transparency that the camera is in use.
Photos and videos taken with the camera may contain other information, such as where and when they were taken, the depth of field and overcapture. If you do not want photos and videos taken with the Camera app to include location, you can control this at any time by going to Settings > Privacy > Location Services > Camera. If you do not want photos and video to include location when shared, you can turn location off in the Options menu in the share sheet.
Apps that use ARKit can use world or face tracking information from the other camera to better position your AR experience. World Tracking uses algorithms on your device to process information from these sensors in order to determine a user’s position relative to a physical space. World Tracking enables features such as Optical Heading in Maps.