Transferring a domain from one registrar company to another usually involves the use of a unique authorization code, which different companies refer to as an EPP authentication code, a domain name password or an AuthInfo code. This code can be used as a security mechanism against unwanted transfers with all gTLD and with most ccTLD extensions. It can be obtained only by the owner of the given domain and is issued by the present domain registrar company. It must be given to the new registrar because the transfer process cannot be initiated without it. The code is case-sensitive and usually comprises of digits and special characters, so as to stop unauthenticated individuals from deciphering it. Some domain registrars even reset the codes of domain names registered through them once in a while for greater security.