With last year’s Galaxy Note 7, Samsung introduced the iris scanner, followed by Galaxy S8 and Galaxy Note 8’s Face Unlock. However, this facial recognition feature by Samsung has often been criticized for not being the safest biometric security measures. Then came along Apple’s Face ID, which was released with the anniversary edition iPhone X. Apple claims Face ID has a one in a million chance of being spoofed (though that claims is yet to be put through a test). And looks like Samsung has picked something from Apple, and is treading on the Face ID path. Samsung is reportedly working on its own 3D image mapping sensors.
According to a tweet posted by tech informant Ice Universe (via SamMobile), Samsung will be placing this 3D image mapping sensor on the upcoming Galaxy S9, which would work quite similarly to Apple’s Face ID. Face ID is Apple’s new secure authentication feature, which replaces the previously present Touch ID feature for authentication. Other than unlocking a smartphone, Face ID also allows users to make cashless payments. Apple explains, that to enable the 3D recognition it integrated a dedicated TrueDepth camera. The setup includes a dot projector, which projects and analyzes more than 30,000 invisible dots for creating a depth map of a user’s face, and an infrared camera to read the dotted pattern. There is also a flood illuminator that helps the infrared light identify your face, even in the dark. 
In simpler words, the camera takes a 3D scan of your face from all angles. This 3D scan of your face is securely saved inside the smartphone’s enclave hardware chip. When you want to unlock your iPhone X, this 3D map is compared and once it matches, the authentication is successful. 
Now that gives an idea on the lines of what Samsung’s Face ID may work, it is also interesting to note the recently announced image sensors the company launched. Samsung has created new image sensors that it thinks can help get rid of the infamous camera bump, which we now see in almost every other smartphone. The company has developed the duo of new ISOCELL sensors — two different components with different selling points. One of them is a 1.28-micrometer (μm) 12-megapixel ISOCELL Fast 2L9 sensor with dual-pixel technology, and the other is an ultra-small 0.9μm 24-megapixel ISOCELL Slim 2X7 sensor with Tetracell technology. 
Basically, with the new sensors, you can expect improved speed in focus, as well as the ability for the camera to keep locked-on and track moving objects. On its blog, Samsung promises that this will all be possible in low light too, vowing that it’ll keep the next smartphone bump-free, while also delivering ‘bokeh’ depth of focus effects with just a single lens. We are hoping this hint is for the Samsung Galaxy S9.