Some early versions of the NCU were implants that were inserted regularly into your wrist. You can still find implants like this on mutants and other wildlife - and even on very old humans. Modern breeds can not use it as it is.

Some early versions of the NCU were implants that were inserted regularly into your wrist. You can still find implants like this on mutants and other wildlife - and even on very old humans. Modern breeds can not use it as it is.