Five privacy and security concerns about Apple’s new FaceID facial recognition

Apple on Tuesday (Sept. 12) unveiled its new FaceID facial recognition technology for the iPhone X—the successor to the iPhone TouchID fingerprint scanner. The company says FaceID is 20 times more secure than TouchID, and can be used for unlocking apps and using ApplePay. Still, this kind of technology (which you can read more about here) raises a lot of questions. Here’s what we’re wondering:
Where will the data be stored?
What are the legal implications of opening your phone with your face?
What else will Apple use the data for, even if it’s just on our phones?
Who else will have access to those sensors?
Does facial recognition this effective really make sense in real-life scenarios?