The Association for Computing Machinery does not issue formal invitation letters for visas. We can however issue a visa support letter.
For visa support letters, please send all requests to firstname.lastname@example.org with the following information:
- Name and mailing address as it appears on your passport
- The name of the conference you wish to attend ("ACM Recommender Systems 2009")
- Registration confirmation number (registration will be available online by July 3, 2009)
- If you are the author of any papers accepted for the conference, please provide the title
- Fax number
- *Visa Support letters are not issued via email