I wonder...
Your tale of meeting this Quasi-zombie Proto-synthetic robot, property of Armin Cohen, 23 the Sidings, Milletsville, Eastern Frivell, Kepler-452b, fails to be clear on the means how you, Peter, managed to recognize the person sitting at a table next to you as being in fact a Quasi-zombie Proto-synthetic robot. All the more curious as the Quasi-zombie Proto-synthetic robot itself sufferend from memory loss and wasn't aware of its origins.
I therefor suspect you made use of some obscure speculative ability or apparatus to be able to note the difference between a (humanoid) person and a Quasi-zombie Proto-synthetic robot from Kepler-2452b, but are unwilling to disclose the used method.
The UV light scanner you fortuitously were carrying (in a pocket of your jacket?) sure came in handy, but was applied only after the person had already been identified by you as a Quasi-zombie Proto-synthetic robot.
I will refrain from casting doubt on your 'information' by calling it 'fiction', but it does provide ample room for speculation.