The technology cuts a tiny portion of glass out of the underside of the display, where the sensor is placed, allowing the detection of fingerprints through glass. A technology that could well see its debut on the LG G6. LG Innotek unveiled a fingerprint sensor on May 2 that does not require a physical button to operate.
Never one to shy away from innovation, LG Innotek announced it is now looking to dispense with the need for buttons on smartphones entirely by placing the fingerprint sensor on the underside of the glass cover.
This idea is not new, however. Qualcomm has been working on something called Snapdragon Sense ID for some time, which uses ultrasonic sound to capture details of fingerprints through glass or even metal, allowing the unit to be placed below the phone’s surface. Qualcomm’s solution is advantageous in another respect, as well: it captures the image in 3D, making it more secure than current technology.
LG’s solution makes no mention of ultrasound, instead appearing to be a more traditional scanner, simply cut into the underside of the glass cover.
LG Innotek says a furrow of 0.3 mm is cut into the underside of the glass, but they claim it retains its strength, being capable of enduring the impact of small steel ball dropped from a height of 20 cm.
The advantage of placing the sensor below the glass in this way is two-fold: it allows for sleeker and freer design work, and it also means that devices can more easily be made dust- and water-proof, due to fewer openings.
No word on when exactly the technology is likely to make an appearance in an LG device, but we could well expect to see a buttonless LG G6.