Early registration for Middleware 2015 ends on November 6th. Registration fees will increase from November 7th, so register early! (On-site registration will include an additional surcharge.)
Letters for Visas
If you need an invitation letter for a visa, you must register for Middleware 2015 before we can issue an invitation letter.
International registrants should be particularly aware and careful about visa requirements, and should plan travel well in advance. All visa inquiries will be handled by ACM. Please see
In particular (copied from above web-page), you have to send your request for a letter in support of a visa application to firstname.lastname@example.org including the following information
Please note visa support letters are issued via email by PDF and the original is mailed to your current postal address.