The trending buzzword in technology right now is "wearables." That includes fitness trackers like the FitBit and Jawbone, smart watches like Apple Watch and headsets like Google Glass.
These do useful things like provide quick information, let you interact with your smartphone remotely and record your vital signs such as heartbeat and how much you move. However, one company has decided that there's an important feature every other wearable manufacturer is missing.
That's why we now have the CH4. This little square attaches to your back pocket or belt, and records your ... how should I put this delicately ... gaseous emissions. OK, it sounds like a joke a teenage boy would have come up with, but there is an actual reason behind it.
As your food is digested, your body can produce several types of gases, like hydrogen, methane and carbon dioxide. If you eat something your body doesn't handle well, it can lead to an imbalance of gases, or way too much of one being produced. That might lead to discomfort, and upset stomach, or ... social embarrassment.