The 51st IEEE Conference on Local Computer Networks (LCN), October 7-9, 2026 in Coimbra, Portugal

Visa Information


While citizens of many countries world-wide usually do not require a visa to enter Portugal for a short-term (less than 90-day) visit, citizens of some countries do. See the official Ministry of Foreign Affairs Visa Web page for complete visa information, including a list of countries and territories whose citizens require a visa in order to enter Portugal as visitors.

The Portugal Online Web site (on January 9, 2026) says this:

To enter Portugal, you may need a passport and/or visa depending on the country you live in. Citizens from the European Community don't need a Visa for entering Portugal. Portugal is also a signatory to the 1995 Schengen Agreement.

Passports must be valid for up to six months (depending on your nationality) and are required by all, except for European Union nationals and nationals of Iceland, Liechtenstein, Malta, Norway, and Switzerland holding valid national ID cards. British, Australian, Canadian, American, and Japanese citizens need a valid passport.

Visas are required by all for stays of up to 90 days, except for:

  • The European Union nationals listed above.
  • Nationals of Andorra, Argentina, Brazil, Canada, Chile, Costa Rica, Croatia, Cyprus, Czech Republic, Ecuador, Hungary, Israel, Korea (Rep. of), Lithuania, Mexico, New Zealand, Norway, Paraguay, Poland, San Marino, Singapore, Slovak Republic, Slovenia, Switzerland, United States, Uruguay, Vatican City, and Venezuela.

If and only if you are an author of an accepted LCN conference or workshop paper and you need a letter of invitation for visa purposes, please send an email to the LCN Local Arrangements Chair(s), which needs to include all of the following information:

  1. Full name (both given and family names)
  2. Gender
  3. Date of birth
  4. Place of birth
  5. Nationality
  6. Affiliation
  7. Full postal address of this affiliation
  8. Full postal address of where the letter should be sent (only if different from affiliation address)
  9. Fax number (only if letter is to be FAXed)
  10. E-mail address
  11. EDAS paper number
  12. Paper title
  13. IEEE LCN registration confirmation (as an attachment)

An optional item is the planned itinerary for the trip. Including this may speed-up the visa approval process.

Please note that you need to complete the author registration for the LCN Conference before you can request a letter of invitation.