A camera inside the cab captured photos of the suspect revealing his neck tattoos, one in front and another one on the right side.
Police say early Monday morning, the suspect placed a knife on the driver's neck and demanded money.
It happened as the cab stopped at the intersection of East 141st and Saint Mary's Streets in the Port Morris Section.
The driver was not harmed.
The suspect is described as a Hispanic man between the ages of 25-30, light skinned, and clean shaven.
He was last seen wearing a long sleeve white shirt and a multi-colored baseball cap.
Anyone with information in regards to this incident is asked to call Crime stoppers at 1-800-577-TIPS (8477).
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