Conference terminology

• Suitcasing — Sales people attend the show as a normal attendee, don't pay the conference the exhibitor fee, but then try to sell products on the sly.
• Outboarding [2]

Attending a conference with registering but without paying (getting in for free)

• https://www.essence.com/news/money-career/how-to-attend-conferences-for-free/
• https://www.lifehack.org/articles/communication/6-ways-to-attend-awesome-conferences-for-free.html
• https://qz.com/188260/complete-guide-to-attending-a-conference-without-paying
• https://globalconference.ca/how-to-attend-conferences-without-funding/
• https://www.reddit.com/r/AskAcademia/comments/w79c9f/are_academic_conferences_open_to_the_public/

Attending a conference without registering

• https://medium.com/useful-now-startups/how-to-crash-any-conference-demo-day-vip-party-3d28505d7e82 [2]
• https://www.quora.com/Is-it-possible-to-sneak-into-an-academic-conference-without-paying-or-registering
• https://globalconference.ca/can-i-attend-a-conference-without-registration/
• https://qz.com/188260/complete-guide-to-attending-a-conference-without-paying
• https://academia.stackexchange.com/questions/75358/is-it-ok-to-show-up-to-a-conference-without-registering-if-i-dont-eat-any-meals
• https://forum.thegradcafe.com/topic/58498-attending-a-conference-without-registering/