When attending the DIS 2025 conference in Portugal (PT), it is essential to submit your business visa application well in advance before your intended entry into the Schengen area if you are a citizen of a country with a visa requirement to avoid processing delays. Refer to the Portuguese Ministry of Foreign Affairs website for detailed guidelines and a list of visa requirements.
ACM is able to provide visa support letters to registered attendees, authors, and speakers with accepted papers/posters/talks, as well as conference committee members. Please allow up to 10 business days for your information to be reviewed and your support letter to be processed. All requests are handled in the order they are received.
NB. However, in many cases, that letter won’t suffice since it is not stated from within Schengen. In those cases, please contact chairs@dis2025.acm.org with the specific information requirements stated by the embassy.