Transferring a domain from one registrar company to another ordinarily entails the use of a unique transfer code, which different registrar companies call an EPP authorization code, a domain password or an Auth code. This code can be used as a security measure against unauthorized transfers with all generic and with most country-code extensions. The code can be obtained only by the domain registrant and is issued by the current domain name registrar company. It must be given to the new domain registrar company because the transfer process cannot be initiated without it. The code is case-sensitive and traditionally contains digits and special symbols, so as to hinder unauthenticated persons from hijacking it. Some registrars even reset the codes of domains registered through them periodically for better security.