When the Safetrust Wallet has a message pop up, asking for access to your devices' location, you can either Deny or Allow it. Background services are used to communicate with Bluetooth readers to open doors or login to services when you present your device. Your location is not being used or stored.
Under Settings of the Safetrust Wallet, "Credential Auto-Authenticate" can be set to Scanning or Leashing.
For Scanning mode, it may require location services to work properly. Users can deny it, but in some cases authentication will not work properly
For leashing mode, location service is not required.