With in-screen fingerprint readers quickly becoming a regular feature of flagship phones, manufacturers are starting to wonder about what other things they can stick under the display. In the past day, both Oppo and Xiaomi have taken to social media to show off the latest development: under-display front-facing cameras. Forget camera notches, hole punch displays, and complicated pop-up mechanisms; the under-display camera enables all-screen smartphone designs with no moving parts.

Under-display cameras will work a lot like optical under-display fingerprint readers—a CMOS chip will be placed under a transparent section of the display, and it will peer through the pixels to see the outside world. For an optical fingerprint reader, the image capturing setup only needs to be of high enough quality to identify the ridges and valleys of your fingertip. For selfies and video chats, there will be much higher demands for image quality, and we wonder what obstructing the camera view with pixels will do to the image quality. Both Xiaomi and Oppo shared videos of the in-display cameras working, but the videos are too low quality to make any kind of image quality determinations.

Do you want a sneak peek at the future? Here you go...introducing you to Under-Display Camera technology!#Xiaomi #InnovationForEveryone pic.twitter.com/d2HL6FHkh1 — Xiaomi #5GIsHere (@Xiaomi) June 3, 2019

We've technically already seen an "under-display camera" from the Samsung Galaxy S10, but Samsung carved out any camera-impeding pixels with a laser, making a permanent black spot in the display. These new prototypes take things a step further, with Xiaomi promising the front camera will "disappear" and be "complete seamless."

When you aren't taking a picture, the display pixels work normally, and when it's picture time, the pixels around the camera turn off, allowing the camera to see through the display. Xiaomi detailed some of its implementation, saying it was using a "special low-reflective glass" for better image quality.

For those seeking the perfect, notchless smartphone screen experience – prepare to be amazed. 📲 You are taking a very first look at our under-display selfie camera technology. RT! 🤯 pic.twitter.com/FrqB6RiJaY — OPPO (@oppo) June 3, 2019

For the privacy-minded types out there, this technology will also enable people to hide cameras behind pretty much any screen, possibly in a way that's nearly impossible to notice. What fun!

There's no word on which specific models will ship with this style of camera first, but like the OnePlus 7 Pro, it should mean more gorgeous, all-screen devices. Obviously, both companies are showing off under-display cameras at the same time because some component vendor out there has started selling an under-display camera solution. Chinese manufacturers excel at quickly getting components to market, so I would not be surprised to see these pop up everywhere in a few months.