In addition to your name and institution, the badge includes information on the type of your registration:

M = Meeting Pass (Sun-Tues)
C = Congress pass (Mon-Fri)
H = Helsinki pass (Thurs-Fri, including Women of the Arctic attendees)
S = Student pass (Mon-Fri)

The small colored dots at the bottom of the badge give you access to social events (if you have registered for them), so make sure you bring the badge with you when entering the bus or the venues - you will not be allowed in without it. The dots appear in the following order on the badges:

Red: Maikkula Mansion lunch event on Tuesday, Sept 4
Yellow: Congress dinner at the Theatre on Tuesday evening, Sept 4
Green: Venetian Garden Party on Wednesday, Sept 5
Blue: ThinkCorner welcome reception in Helsinki on Thursday, Sept 6

Important note regarding the security at the Maikkula Mansion lunch event (Tues, Sept 4)

You can only enter the Congress buses to Maikkula with your name badge that shows your registration for the lunch event (the red dot). The badges will be also checked when leaving the bus. If you come to Maikkula with your own car or by taxi, your Congress badge will be checked at the gate by the police, so pick it up from the registration desk at the university before 11:30 on Tuesday!

Important note regarding the welcome reception at ThinkCorner (Thurs, Sept 6)

If you have registered for the welcome reception at ThinkCorner on Thursday evening and are only participating in Helsinki, pick up your name badge from the registration desk between 18:00 and 20:00 (Ground Floor Lobby at the University of Helsinki Main Building, address: Fabianinkatu 33). The registration and ThinkCorner are located just across the street from each other.