New LG Tech Hides Fingerprint Sensors Away

LG’s Fingerprint Sensor in Glass Front Panel

Fingerprint sensors seem to be the norm on modern smartphone though they are assimilated with a button of some type. Intending to create smoother and simpler devices, LG Innotek, the division of the company which produces components and materials has integrated a fingerprint sensor in the glass front panel but from beneath the sheet instead of in front or on top. It means that it is totally hidden away; more resistant to damage though crucially tends to have the same level of accuracy expected from a regular exposed fingerprint sensor.

The new fingerprint sensor enables users to only place their finger on the glass of their phone screen and the sensor beneath tends to identify the print. The benefit of this is that in view of LG, is the capability for waterproof of phone as well as better prevention of scratches. LG has crafted a small 0.01 groove on the underside of a glass screen cover to lodge the fingerprint module, as proof of the idea. Having the sensor hidden away on the inner side, phone designers would need to think productively on how to reveal its location. LG states that the module tends to have an accuracy of 99.998% which means that it will only falsely recognize someone else’s print 0.002% of the time.

Fingerprint Sensors on Phones – Immediately Obvious

Fingerprint sensors on most of the phones tend to be immediately obvious since it is being fitted inside button on the front such as the iPhone or Galaxy S7 or in recessed square or circular cut-outs towards the back of a phone such as in most Huawei devices or the LG G5.LG Innotek flipped the glass front panel around, fixed out a piece just 0.3 mm thick, placing the fingerprint sensor inside.

On turning the glass over and there is nothing there to indicate a fingerprint sensor is hidden away, giving a sleeker, less cluttered design and opportunities marking out where to place a finger or thumb utilising subtle graphics or markings. The sensor is protected from water damage while the surface is less likely to be scratched without using sapphire crystal cover such as those used on the Touch ID button of iPhone. Moreover has also dropped a 130 gram steel ball from a height of 20 cm to prove that the thin glass is tough.

Invisible Sensor – False Acceptance Rating – FAR 0.002%

LG asserts that the invisible sensor has a false acceptance rating – FAR of 0.002% which is a possibility of it accepting someone’s fingerprint as your own. Though it is great for our own security, it is an essential if LG prefers to use the new fingerprint sensor on Android phones. According to Googles’ documentation, a FAR rating not greater that 0.002% seems to be a requirement for sensors utilised with Android 6.0 Marshmallow.

While the new under glass fingerprint sensor has been announced, with LG Innotek developing a special adhesive in order to stick the sensor to the underside of the panel, there is no sign of when it would go into mass production, ready for the use on a real phone. The G5 had been revealed by LG recently but some have been expecting it to show off a sequel to the V10 later in the year.