What should be allowed in full name in a sign up form?

Question

Building an international web app like Quora or twitter to serve many countries. What should be allowed for person's name in profile.

• Only one full name field or first name and last name
• How many minimum/maximum characters
• Only English (A-Z,a-z,spaces) or more characters (dot, etc. or more languages, unicode, utf-8, utf-16, what?)

What rules are being used by zomato, twitter, quora?

Answer 1

You could just offer a single Box Username where the user can decide weather to use first-/lastname-system or something else

Answer 2

Normally a persons name should be the second name. When we create the form we will say to the user first name or sure name and second name.

Name suggests 35 characters but put as: 70 characters maximum, first name length was 46, and email 255 characters.

It applies to all languages