http://www.techradar.com/news/lg-g7-rumored-to-come-with-an-advanced-iris-scanner

Up until now LG hasn't followed Samsung's lead by including an iris scanner in its phones - both the LG G6 and LG V30 were fingerprint-only - but a newly unearthed patent submitted by LG suggests that could change in 2018 with the arrival of the LG G7.

The patent, as spotted by LetsGoDigital, is for biometric authentication through an iris scanner as normal, but the filing mentions a few extra tricks. The sensor will adjust its reading based on ambient light, for a start, to allow for variations in pupil size and to make sure you can always use the scanner no matter what the lighting conditions.