ACM provides visa support letters to attendees, accepted authors (papers, posters), and members of the conference committee.

There are two ways to request a visa support letter—please use only one method to avoid delays:

1. Fastest method: Request through registration During the registration process, you will be prompted to enter the necessary information to generate a visa letter automatically through ACM. Letters are typically issued within two business days.

2. Alternative method (for accepted authors or committee members only): Email request If you are not yet registering but require a visa letter (e.g., for early planning), send an email to supportletters@acm.org. Please allow up to 10 business days for processing. Include the following in your request:

• Full name (as it appears on your passport)
• Current postal mailing address
• Name of the conference: MobileHCI 2026 – The ACM International Conference on Mobile Human-Computer Interaction
• Registration confirmation number (if available)
• Title of your accepted paper or poster, and indicate if you are the “sole author” or a “co-author”
• If applicable, title of your presentation (for invited speakers)

All requests are processed in the order received.

Please note that visa support letters are issued solely to assist with visa applications and do not guarantee entry into the country. It is the responsibility of the attendee to ensure they meet all visa requirements and to apply for any visa required in a timely manner.