Non-passer

A non-passer is a sentient life form that cannont "pass" for human. This differs from passers, who appear human enough to pass in a crowd.

Definitions for passers and non-passers are very loose and informal.

Examples

The Satyarans are a prime example of a non-passer as their skin does not reflect visible light, making them effectively invisible to the human eye. However, tests done by Jason Bur'I durring the Saratoga's visit to the Satyaran homeworld would seem to indiciate that humans and satyarans are genetically compatable.