It was only a matter of time before wearable technology moved from people's heads and wrists and ventured downstairs. British adult retailer Bondara is leading the charge, showing off a prototype activity tracker and sex toy that goes on the gentleman's region. The SexFit is a ring that sits at the base of the penis, trapping blood for better, uh, erections, but also packs an accelerometer and Bluetooth module. That way, your in-and-out statistics will be shared with a companion app on a smartphone that'll tell you your thrust per minute and even the calories you've burned. Oh, and you can even share those figures with your shocked friends on social media.