Participate to win one of the 6 Sony Bluetooth portable speakers!
Fill in at least 20 boxes of the passport card by getting a stamp at the exhibitors' booths. Then bring it back to the registration counter by Friday 24 May at 13:00 to be eligible for the prize lottery.
Six winners will be chosen at random and announced at the registration counter. Winners will have until 16:00 on that same day to collect their prize in person.