Some apps or games in Microsoft Store are designed to take advantage of specific hardware or software capabilities on your Windows device. A photo app might need to use your phone's camera, or a restaurant guide might use your location to recommend nearby places.
In Windows 10, use the Privacy page to choose which apps can use a particular feature. Select Start > Settings > Privacy. Select the app (for example, Calendar) and choose which app permissions are on or off.
The Privacy page won't list apps with permission to use all system resources. You can't use the Privacy settings to control what capabilities these apps can use. Windows Desktop apps fall under this category. To see the permissions for an app, go to the app product page in Microsoft Store or online. If you don’t want an app to use any of the features listed, you can choose not to install it.
Here's more info on what permissions allow an app to do:
All system resources: Use any and all system resources (such as camera, microphone, or location) without further notification. You can't control app permissions for individual system resources via the Privacy page.
Bluetooth: Activate and use any Bluetooth connections between your device and other devices.
Contacts: Access your contacts, people, or address book apps.
Calendar: Access your calendars.
Call History: Access history of phone calls you made on the device, in Skype or other telephony apps.
Email: Access your email and account info for your email accounts.
Facial recognition: Activate and use any facial recognition hardware.
Fingerprint reader: Activate and use any fingerprint reader hardware.
Location: Activate and use the GPS or other location-finding features on your device. Access location data in Maps and other location apps.
Messaging: Access your instant messages and account info.
Microphone: Activate and use the microphone on your device.
Motion: Activate and use the accelerometer or other motion-sensing feature on your device.
Music library: Access any music files from the Music library on your device.
Near field communications: Activate and use any near field communications (NFC) connections between your device and other devices.
Notifications: Access your notifications, found in action center.
Pictures library: Access any picture files from the Pictures library on your device.
Tasks: Access your task list in Outlook and other task-tracking apps.
Video library: Access any video files from the Video library on your device.
Voice recognition: Activate and use any voice recognition hardware.
Webcam: Activate and use the camera on your device.
WiFi: Activate and use WiFi connections between your device, the internet, and other devices.
Wired connections: Activate and use any wired connections, including Ethernet, USB, and Serial communications between your device, the internet, and other devices.