With 50% of views to YouTube coming from mobile devices, the lack of access to annotations for these viewers has long been an issue for creators and users of the site. We knew that YouTube was planning an upgrade to the feature, and early this week, it finally announced new mobile-friendly functionality in the shape of interactive YouTube “Cards”.Cards allow the creator to add an extra layer of interactivity to their video content, on a per video basis. Most importantly, the new Cards will finally display on mobile, as well as desktop, and will include custom images, titles and call-to-action text. They fall into 6 different options: video, playlist, associated website, merchandise, fundraising, and fan funding, and they can be used both for pre-recorded and live-streamed video content.