When you offer prizes for the winner in your professional package, you naturally don't want some players to register twice.
.You can usually prevent this simply by asking the player for additional data when registering. To do this, go to the menu "Data collection" in the admin area and create queries for first and last name and postal address, for example. You will anyway need this data later for sending the prizes. However, you can also create your own queries such as customer number and personnel number.
In order to process this data in a legally secure manner, please note our tips on data protection.
In addition, we at Kicktipp also have an automatic detection of duplicate registrations and proactively delete duplicate registrations.