The front camera is less than stellar, as our self portraits looked extremely fuzzy with very few noticeable facial details. (laptopmag.com)
In these instances, the infrared tends to blow out the face exposure, so facial details aren't as clear. (pocket-lint.com)
The lack of facial detail reduced the precision of the PI measurements so that individuals with similar PIs could easily be confused with one another. (newscientist.com)