Normal face perception is just picking up on the melody of faces while people with prosopagnosia generally lack this ability (although to different degrees).

通常的脸部识别就像是在逐步熟悉脸部旋律，而面容失忆症患者一般就缺少这种能力(尽管程度不同)。

youdao

Men are all the same - they just have different faces, so that you can tell them apart.

男人都是一样的——只是他们长有不同的脸，以便你能把他们区分开来。

youdao

Men are all the same-they just have different faces so you can tell them apart.

男人都是一个样——他们只有供你识别不同的嘴脸。

youdao

Or is it just a way of being able to have many different faces on a watch via software?

FORBES: Links 28 Dec: Are We Now Waiting For Apple's iWatch?