This page lists some facts that may be helpful while staying in Finland. Most major foreign currencies can be exchanged at competitive rates at exchange agencies in Helsinki center and in Tapiola.
Banks also offer exchange service but they usually charge a higher service fee.
The Conference Secretariat will accept VISA, Mastercard and Eurocard for payments. Most stores, restaurants and hotels accept major credit cards. Cash withdrawals can be made from ATMs with the credit cards mentioned above. There are coin and card-operated telephones near the conference hall. Telephone cards can be purchased from the university bookshop and from the post office.