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 2 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: CUI 2025 – Conversational User Interfaces
  • 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.