If you decide to transfer a domain from one domain registrar to another, you will have to go through several security procedures. One of them is getting a special EPP authorization code from the present registrar – as long as you are the domain registrant, since the code is emailed to the owner's email and nobody else can get it. You’ll need to give this code to the new registrar, otherwise they will not be able to initiate the domain transfer process. The EPP codes are case-sensitive and may comprise of numbers or special symbols such as commas or dots, which can be easily mistyped, so make sure you copy & paste the right code. As an extra protection measure, the transfer code for a domain may be reset regularly. Certain domain name registrars call this code a domain secret, a domain password or an Auth key as well.