The body-hacking scientist who implanted an Opal card chip in his hand claims the NSW government has finally made good on threats to cancel his pass.

But the defiant "biohacker" is preparing to fight the move in court.

Meow-Ludo Disco Gamma Meow-Meow will fight the move in court. Credit:Fairfax Media

Meow-Ludo Disco Gamma Meow-Meow, which is his legal name, cut down the Opal chip, had it encased in biocompatible plastic and then implanted it just under the skin on his left hand by a piercing expert in April 2017.

His biohack made headlines around the world in the hours that followed the operation but Transport for NSW warned it would cancel cards that had been tampered with.