The livestream of our plenary sessions can be viewed on this very website and the platform is Vimeo. In principle for Vimeo nothing specific is required. It can be compared to YouTube; watching a video is click and play.
We highly recommend using full screen view for the plenary sessions and use the Slido app (see below for info) to ask your questions and vote on your mobile phone or tablet next to this.
If your institute firewalls Vimeo, it might be harder for you to access but there are ways around this. Also unfortunately a few governments censor/ block Vimeo (at this time: China, incl HongKong, Indonesia, Cuba, North Korea, Iran, Sudan, Syria); generally however, participants do not have trouble accessing the stream if it is embedded in a website like ours. Please use below link to help you.
Solutions for firewalls and other blocks: https://intercom.help/breatheology/en/articles/2402924-vimeo-is-banned-in-my-country-how-do-i-watch-videos
For detailed requirements of Vimeo on all sorts of different devices, please use this link: https://vimeo.zendesk.com/hc/en-us/articles/360001624108-System-Requirements-for-viewing-browsing-and-apps