Researchers at Northwestern University developed a sticker that’s applied to the fingernail and measures heart rate, motion, and blood oxygen, all without a battery. The photoplethysmograph (PPG ...

Following is a transcript of the video. Nico Reyes: Today, we're going to be trying out the Uuuuu Magical Nail Extension Kit. Forgive me if I'm saying that wrong. But it's basically this kit that ...

But here's the catch: if I rush and skip prepping my nails properly or picking the right size sticker, it might not look as ...