Fingerprint sensors on smartphones are nothing new or special, but the “Vivo” is the world’s first smartphone with one located underneath its display. The handset boasts a Synaptics optical sensor that functions by peering through the gaps between the pixels in an OLED display and then scanning your finger. No word yet on pricing or availability. Continue reading for a hands-on video demonstration straight from CES 2018.”This 6-inch phone has the minimal bezels of something like the OnePlus 5T, but it also happens to unlock when I put my finger at the bottom of its screen. The technological aspect is just totally invisible and, if you’re not paying attention to how challenging this is technically, it feels almost pedestrian and unimpressive. Like, of course, that’s how it always should have been,” according to The Verge.