I have no experience in this field. The article wants a hard-copy behind the sun visor of each car. I would think having a digital copy could be grabbed from the VIN number with minimal coordination. In practice, it could be pulled up before rescue services arrive on the scene from the license plate or driver's registration with a final spot-check on scene. That might help the parent?

I would think a lookup via a photo (unless it's the vin number or a QR code) would be more difficult and take much longer to adopt. I would think something like having the car broadcast basic info with an emergency beacon would be more ideal...but has privacy concerns, would require opt in from manufacturers, and equipment and training on the emergency services side. Maybe another industry like planes or boats would be easier to adopt something like this?