[![Sombra's abilities](https://i.stack.imgur.com/twLMx.png)](https://i.stack.imgur.com/twLMx.png)

Sombra's passive, Opportunist, allows her to view critically inured enemies through walls. When I was given a chance to play at Blizzcon, I didn't even notice she had this passive until I saw the skill list she has.

How far exactly will Opportunist allow her to see through walls? Is this a global map-wide ability that allows her to view critically-injured enemies from anywhere on the map, or does she need to be at least in somewhat close proximity?