I said 20 years ago - after the fall of communism. The situation looked like that pretty much until we entered the EU in 2001. Funnily enough, passing the border was easier during communism,because so few people did it that the guards assumed that since you are holding a passport in your hand you must have gone through a very stringent process of obtaining one, and would mostly have a look at your picture, your visa if you had one and let you go quickly(passports also had to be returned to the government upon return to Poland, you had to apply again if you wanted to leave again). Then after 1989 anyone could get a passport whenever they wanted,so border controls became a lot more strict.