If you have children and talk to them about danger (which you should), tell them that if someone is ever attempting to take them they should yell “you’re not my mom/dad!” That way, passers-by know it’s not just a kid having a tantrum

My mom taught me this along with having a password if one of her co-workers ever had to pick me up for an emergency or whatever. Once my grandpa came to get me and it wasn’t planned, I asked him the password and he didn’t know what I was talking about. I wouldn’t go with him for 20 minutes until he called my dad and got the password.