Baby wearables. With the boom in fitness trackers, you must've seen them coming, right? Now, a pair of ex-Apple and Google employees has launched the Sproutling baby monitor, a device the company likens to Nest in terms of design and simplicity. Unlike the Withings Baby Monitor camera, however, it's meant to be worn around your baby's ankle. That way, it can monitor parameters like heart rate, skin temperature and body movement, while also tracking the room's temperature, humidity and light levels. All that data is sent to a smartphone app, which crunches it to create simple notifications. For instance, it can tell you whether her heart rate is higher than normal, if she's sleeping on her back, if it's warmer than ideal in the room or whether she's now awake and not in a good mood.