Talk:Blink/@comment-6716431-20170319064042/@comment-6716431-20170319074105

Corvo can see the visual effects of another's Blink. This implies that others can see the visual effects of his. However, as no guards react suspiciously to a ball of light (or a cloud of ash, as in Daud's case), it would appear that NPCs cannot see these effects.

However, Daud is both a protagonist and an NPC. When as NPC, he does not react. When he's the protagonist, he can see Corvo (at least, in the dream at the beginning of TBW) and he can also see his Whalers blink.

And Corvo, when he's in the book, he can also see the effects. However, I cannot remember whether Emily can see Corvo blink in the opening cutscene of D2.

To me, this all seems to mean that character in the franchise who is currently the "host" of the real-world player/reader is the only one capable of seeing others use Blink.