The $99 Mio Link uses its optical sensor to track your heart rate.
Julius Genachowski talks with Larry Magid about E-Rate for schools and libraries and also fields questions on Net neutrality.
Other dogs, cats and food figure prominently in photos taken by a dog set up with a Nikon camera triggered by a heart-rate monitor. Squirrel!
Fitbit's Charge HR adds heart-rate tracking to an already solid fitness band at a great price, but all the kinks don't feel fully ironed out yet.
The Up3 is one of the smallest super-slim fitness bands around, but its lack of a display and limited heart rate tracking aren't worth the high price.
Garmin's newest watch can measure pace, distance and heart rate while running, along with tracking steps taken, distance traveled, calories burned and your sleep at night.
Is there room for a plain old fitness band with no screen in an age of smartwatches? Jawbone's new band has fantastic software, but its heart rate tracking's just not useful enough.
Frame rate revealed, as development will be handled by an outside studio, according to sources.
"Frame rate is more important than resolution," says Square Enix's Hajime Tabata.
Got a tattoo on your wrist? You could find it difficult to get an Apple Watch to track your heart rate. It's all about the way the ink blocks light from built-in sensors.