Complete the following exercises on your own:
- Go back to the HoloCore example and track the user's position with a block or sphere. Hint—the first part of this example is in the code download.
- Track the user's position as they move on the map. Hint—you will now need to update the user's position from the most recent GPS readings.
- Track multiple users' positions around you. Hint—you can use the Firebase Realtime Database to track the user's position in geographic coordinates.