Nationals of most countries (visa waiver countries) can enter Korea without a visa as long as their visit is tourism or temporary.
To make sure your country is a visa waiver country, please visit Korea Visa Portal.
Note that a person who participates in ESWeek may select "Short Term Visit" in "Purpose Of Entry".
If you need an invitation letter for VISA then please send an email to Hyunok Oh ( firstname.lastname@example.org ) after filling the following information.
Paper title or registration ID:
Date of birthday:
Intended Length of Stay:
Email : Please keep the title of the email as "invitation letter for ESWEEK 2017".