The ESA has provided the first details about how people will access the all-digital E3 2021 event. Gaming fans across the world will be able to 'attend' E3 via an online portal and mobile app.Opening next month, the online portal and app will allow users to visit "virtual 'booths'" for each exhibitor, which will feature videos, written articles, and special events. These will be the locations to find key announcements and game information from each publisher.Vitally, this will be the place where the E3 live broadcast will be held, accompanied by an interactive overlay that will provide viewer polls, featured tweets, and other elements. This broadcast will be hosted by E3 2021's line up of gaming personalities.The portal and app will allow visitors to watch hosted events and video conferences, as well as discuss the announcements and new reveals with others on the E3 2021 forums. Each user will have their own customisable profile and avatar, and can get their names on leaderboards which will track gamified interactions from attendees across the show.From the moment we decided to host E3 virtually, weve been focused on providing an interactive experience for fans around the globe that goes beyond the typical livestream, said Stanley Pierre-Louis, President & CEO of the ESA. The result is a bespoke online portal and app that will allow fans, media and industry professionals to have an E3 experience designed to run parallel to the four-day broadcast, laying the foundation for interactive E3 elements to continue beyond this years all-virtual show.The portal and app will start to accept registration sign-ups from later this month, which will be free to all. E3 2021 will then be open to the public from June 12, which will be the first day of the E3 broadcast. The event will conclude on June 15. Aside from E3's own portal and app, you'll be able to watch the show on IGN as part of our Summer of Gaming event.Matt Purslow is IGN's UK News and Entertainment Writer.