Yep, shouldn't the right answer be: accept whatever the user gave you, validate it with a link in the email you send that they've received it. Should be even m

Yep, shouldn't the right answer be: accept whatever the user gave you, validate it with a link in the email you send that they've received it. Should be even more important if you ever intend to do business with say someone from China. Good luck dealing with validating hanji in an email.