LG unveils fingerprint sensor under smartphone display, no button needed

LG has unveiled a new fingerprint sensor, which is right under the display glass.
LG has unveiled a new fingerprint sensor module, which is embedded under the display glass of the smartphone, and does not require a separate physical button. A device with such a display could be unlocked by just placing one’s finger on the screen, instead of giving the imprint on a separate button.
LG’s Innotek division says they “cut a shallow furrow of 0.01inches (0.3mm) thick on the lower ba