The issuer of the certificate decides at the creation stage whether the certificate will be transferable. If so, its owner can generate a token allowing to transfer of ownership of the certificate to third parties. A token is nothing more than a key that you will be able to generate with the push of a button and send to a specified email address or download as a PDF file and transmit through any other communication channel (including paper). Once the transfer is completed, the previous owner loses access to the document.Such transfer of ownership can be done repeatedly, completely free of charge. In the case of a non-transferable certificate, its owner cannot transfer ownership to another third party.