Apple's latest iOS update was released this week, so naturally we all went STRAIGHT to the emojis to see what was new.  Needless to say we were delighted to find a unicorn, tacos and even a middle finger, but it turns out one of the more inconspicuous images is now our favourite. The small black and white eye inside a speech bubble has been a source of confusion ever since it was previewed a few months back, with all sorts of mad conspiracy theories emerging as to what it may signify. There has been a lot of speculation as to what the emoji means.  It has now been revealed that the emoji is actually part of an anti-bullying campaign, and is a symbol of solidarity for those who want to stand up against online bullying. This is all part of a new digital campaign called "I Am a Witness", created by San Francisco agency Goodby Silverstein & Partners with the Ad Council and Adobe, Apple, Facebook, Google, Johnson & Johnson and Twitter. The emoji can be found in the symbols section.  The idea is that when you are a witness to what you deem cyber-bullying, you post the emoji, whether it's in a whatsapp group or on a viral Facebook post. Kate Baynham, Goodby copywriter, who worked on the campaign, explained: "Our research showed that 60% of bullying will stop in 10 seconds if someone intervenes." We know an emoji is never going to solve such a huge and loaded issue, but we love the idea behind this.