@hoco @elettrona that assumes the issue is with the person using the device (as in the case of a car) and not the company that manufactures it and retains control over it (as in the case of smart glasses).
Which is not the core issue. The core issue is the untrustworthiness of the device vendor.
But a car analogy does make sense here, it just needs to be modified a bit. It's not about a "license" to use them, it's about the certification they are safe to be used in public. Like cars are.