Photographic Quality
If Chocolate Factory is using snap shots from Instagram and the like they are truly the idiots. Most people do not know how to operate a camera and thus use whatever settings the camera/phone selects. Also most do not use a quality camera that has very good resolution and lens ever. Up to point image quality is affected by the quality of the device (sensor size, lens, etc.) as well as the skill of the user. I have not addressed lighting conditions and how to try to compensate for them.
To properly 'train' the artificial idiocy system you need high quality portraits taken from different angles of a large number of people. This costs real money. The reason they sort of get away with it on lighter skinned people is there is naturally better contrast in the face than with darker skinned people. Basically they got lucky. But the poor quality of the original images means more error in the system. Depending on what you need the system to do, the error could be unacceptable.
Biting the hand that feeds IT
