Sensors are the next wave in personal tech. We already have heart-rate sensors, organic produce sensors, even laundry sensors. Matt Rogers, the tech whiz behind the Nest thermostat, surveys five gadgets on the bleeding edge.
Basis band  Basis tracks your heart by way of your wrist: LEDs shine through capillaries, reflecting light back to an optical sensor that measures blood flow and pulse rate, minus the bothersome chest straps. ($200, mybasis.com)
ROGERS SAYS: Basis stands out, thanks to "deeper insights into fitness" through sensors for sweat levels and skin temperature.
Lapka  The original Geiger counter (an air particle detector for radiation levels) gets a refresh in the Lapka. The quartet of devices measure electromagnetic fields, radiation, humidity, and organic content of food. ($220, mylapka.com)
ROGERS SAYS: Checking mold levels isn't part of a daily routine. Mildly put, Lapka is for the "curious person."
Shine  Heads up, swimmers: Shine is a waterproof motion tracker. Wi-Fi transmitters are tricky to embed in solid metal, so the Shine syncs with its app once it touches a smartphone screen. ($100, misfitwearables.com)
ROGERS SAYS: Making a fitness tracker--a crowded market--this beautiful means Shine won't just live in your gym bag.
Twine  Magnets and motion sensors let the programmable Twine send you text alerts if, say, your pipes are freezing, or your teenager is sneaking out. ($125, supermechanical.com)
ROGERS SAYS: Best for "the hacker-hobbyist, for sure."
Netatmo  You don't live at the airport, so why get the airport weather report? Netatmo delivers hyperpersonal meteorology, gleaned from your living room and backyard. ($180, netatmo.com)
ROGERS SAYS: The daily wellness score (on noise pollution and temperature) is "exactly what consumers are looking for."