Right in front of Dorian, the console had a fingerprint scanner which the System used to confirm its identity so that the lottery draw participant did not cheat. It's not that the System suspected that the minions would try to cheat, but it was more meant for the future lottery ticket holders if Jin decided to go ahead and include it to his repertoire of service instances.
(Meanwhile, monsters like Mr Derpy and Mechataur would have to send proxies as the scanner was unable to read their signs)
As Dorian placed his hand on the scanner, the lottery draw ball machine suddenly grew in size right in front of him. As the leader of one of the largest factions, the System had to flush out the current ball samples and replace them with different sets of balls that were meant for those quantities. More colourful marble balls were added into the mix and started to spin as if they were in a washing machine.
