Cold reading was one of the talents Karma mastered while studying with Agyat. But differently.
In conventional cold reading, the reader attempts to communicate with the subject' and gather information by a variety of means, such as convincing the subject that you know more about them than you actually do.
But the way Agyat taught him, Karma doesn't need to communicate with anyone.
Karma worked on honing his talents on the wild animals because there are no other people in the sanctuary.
Agyat forced him to understand animal body language, which advanced his abilities to a different level.
And with that, Karma gained so much knowledge of the human body that he is now able to get information about someone merely by watching them breathe or blink.
The individual with the bag looks to be normal and has a serene expression, but Karma observed a hint of anxiousness in his eyes.