The face of Johann Rehbogen, 94, is blurred by court order because he was a juvenile at the time of his alleged participation in mass murders at Stutthof.
The former guard, who uses a wheelchair, faces a sentence of 15 years if convicted but is unlikely to serve any time in prison because of his advanced age.
His court appearances will be limited to two hours at a time for the same reason, Dortmund prosecutor Andreas Brendel told AFP news agency.
A strangely compelling application of due process.
