If you have an iPhone, and have done the recent iOS 17 update, they have set a new feature called NameDrop defaulted to ON. This feature allows the sharing of your contact info, just by bringing your phones close together. To shut this off go to Settings, General, AirDrop, Bringing Devices Together. Change to OFF.
PARENTS: Don’t forget to change the settings after the update on your children’s phones, also, to help keep them safe as well!