What about these edge case scenario. My family member gets lost/confused/hurt whatever, and needs to borrow a strangers phone to call me to help them. I don't

What about these edge case scenario. My family member gets lost/confused/hurt whatever, and needs to borrow a strangers phone to call me to help them. I don't know that number and perhaps the family number has memorized my phone number since it hasn't changed in 20 years. Maybe they are a small child 5 years old. How do they get thru this system? The only thing I could think of is if they have an extra 'password code' (4-6+ digits) that they'd need to memorize in addition to the phone number? Alternatively in this system, someone compromises your contactid. And a place that says they are calling your 'auto insurance contact' isnt actually your legit auto insurance contact but a scam auto insurance company? You'd need to be able to easily "reset" these values which could be a big burden on small businesses.