I always thought the point was that he spots a ... tattoo? Of a snake? That reminds him of the club? Or the dancer... I'm going to have to watch it again aren't I?
Yes in the 3 minute scene there were multiple indications from the picture to indicate: Chinatown (food/texts), the girls outfit (being a dancer), and an identifying tattoo. Which would point to only a few dance clubs in the city.
It was also a connection to the artificial snake scale being found in the bath tub that happened to be rare and only created by a few possible engineers. Engineers who work on robotics. One Chinatown engineer happened to be employed by the people he was looking for, who were robots in need of an engineer...
Not a far fetched connection by Hollywood's standards.
I get the point, but its not obvious how he sees things in that photo by what looks like, looking behind a door or around a corner. I guess he does some kind of perspective shift that shouldn't be possible with a plain-jane 2D photo. Maybe the idea is that futuristic cameras capture multiple angles and his tool allows him to see it?
It was also a connection to the artificial snake scale being found in the bath tub that happened to be rare and only created by a few possible engineers. Engineers who work on robotics. One Chinatown engineer happened to be employed by the people he was looking for, who were robots in need of an engineer...
Not a far fetched connection by Hollywood's standards.
https://www.youtube.com/watch?v=qHepKd38pr0