The idea behind Phenotype was to achieve a unique visual effect by touching serifs. Characters form ligatures, but every combination looks different.
Touching serifs form connecting character images, e.g. like logotypes on old refrigerators or oldtimer cars, something like the fonts of Leslie Carbarga.
The design idea is based on monospaced and heavy serif fonts like Courier, Isonorm Memphis or Rockwell. However, obviously, Phenotype is not a monospaced typeface.
Phenotype was designed for the URW++ FontForum.