> Users are always identified to you by email address, phone number or both...
An account system using phone numbers may have a negative impact to privacy. For some people a phone number is attached to a real name and address. Also it is not uncommon for a person to change their phone number from time to time.
An account system using phone numbers may have a negative impact to privacy. For some people a phone number is attached to a real name and address. Also it is not uncommon for a person to change their phone number from time to time.