It can’t see through walls but it can see through smoke. Infinity ward’s Mark Rubin took to Twitter to clear up some confusion on this mystery sight spotted in the recent Ghosts trailer.

Some people have been asking about one of the sights they saw in the Squads trailer. NO it is not a target finder or an MMS and doesn’t work exactly like either. It can’t see thru walls or other physical objects. It’s very subtle with a constricted view. It can however see thru smoke similar to the thermal sight. Also your peripheral is heavily blurred. Another cool aspect about it is that you can flip to iron sights on the fly, even while in ADS. Watch the video again closely at about the 2:18 mark to see it in action.

SOURCE: @IWMarkrubin