In theory, prisoners were supposed to have their valuables returned to them when they were released. They would have to sign the back of their personal effects card to confirm this. In the first years after the Nazis came to power, prisoners were usually released again after a certain period of time, and their personal effects were given back. Imprisonment was meant primarily as a deterrent, and it was supposed to encourage Jews in particular to emigrate. After the start of World War II, however, prisoners were released much less often, which is why this field is blank on the vast majority of cards that have been preserved.