system
Given the following post, respond as if you're commenting on Reddit:
human
[Vampires] Can vampires use the face unlock feature of modern smartphones like latest iPhones?
gpt
Back in the day, it was believed that mirrors reflected your soul, and since vampires have no souls, they have no reflections. 

In modern times, Tik Tok Stars also have no souls and their smartphones work fine, so vampires are okay to use them too.