https://www.cnet.com/news/oneplus-6t-promo-teases-its-in-screen-fingerprint-sensor/

The video is quick, but the "Unlock the Future" slogan seems to point at the phone's in-screen fingerprint sensor. Meanwhile the opening animation could be some sort of artsy rendition of how the sensor works.

OnePlus has already confirmed that the OnePlus 6T will get an embedded fingerprint sensor, making it the first OnePlus phone (and one of the first phones on the market) to offer the feature. Phones from Oppo and Vivo already have embedded sensors, but OnePlus' international popularity could bring the tech to a wider audience.