The data you enter here, especially you e-mail address, is handled with special care. It will only be used for communicating news from the Conference; the organizers do not pass it to third parties, and the address will be deleted when the Conference ends.
If you plan to visit Budapest, you are encouraged to register as early as possible, even if you do not have all the required data available. Only your name and e-mail address is required at the first time, and you will be able to return later to complete your data. First time registrants will receive an e-mail with their login ID which they can use later to update their data.