] We find that evidence of appellant's Internet use and the
] existence of an encryption program on his computer was at
] least somewhat relevant to the state's case against him,"
] Judge R.A. Randall wrote in an opinion dated May 3.

The fact that PGP was present on a persons computer was considered relevent in this case. The mere fact that PGP was there makes it more likely that this person was involved in crime.

Minnesota court takes dim view of encryption | CNET News.com