Demise of Indexicality

Levin's article makes the claim that the loss of the referential power in photography and cinema has led us to attach more significance to surveillance.  We now attribute realism to surveillance and consider it to be true, in a way that we can no longer trust photography in the age of photoshop. 

I wonder what the possibility is, though, of manipulating/mediating surveillance/realtime images.  It seems like technology is not too far off, so is surveillance, too, in danger of obsolescence?  Will technology enable images to constantly evade indexicality?

If surveillance can be manipulated, does it have any significance?  Or is the only appeal in the claim to realism?