Facebook has partnered with Ray-Ban to launch a range of smart glasses that feature two hidden cameras, allowing you to secretly snap photos and video on the go. 

Named Ray-Ban Stories, they cost £299 in the UK ($299 in the US) and come with dual integrated five megapixel cameras, a three microphone array and discreet open-ear speakers. 

Images and video captured with Facebook's glasses can be shared via a smartphone to TikTok, Snapchat, Facebook, Instagram and other social media services. 

The launch is thought to be part of Mark Zuckerberg's plan for the social media platform to become a 'metaverse' seeping into the real world. 

The term 'metaverse,' coined in the 1992 dystopian novel 'Snow Crash,' is used to describe immersive, shared spaces accessed across different platforms where the physical and digital converge. 

Zuckerberg, who co-founded Facebook in 2004, has described the metaverse as an 'embodied internet.' 

Glasses with built in cameras and microphones aren't a new thing, with Snapchat releasing its own glasses called Spectacles in 2016, allowing users to take video and photos from their own eye view. 

Facebook described the Ray-Ban Stories product as a way to seamlessly capture, share and listen through your most authentic moments.