On 9 November 1989 East Germany opened the borders for East Germans and East Berliners, who could then freely enter West Berlin. West Berlin itself had never restricted their entry. For West Berliners and West Germans the opening of the border for free entry lasted longer. The regulation concerning one-day-visas on entering the East and the compulsory minimum exchange of 25 Western Deutsche Marks by 1989, continued. However, more checkpoints were opened. Finally, on 22 December 1989, East Germany granted West Berliners and West Germans free entry without charge at the existing checkpoints, demanding only valid papers. Eastern controls were slowly eased into spot checks and finally abolished on 30 June 1990, the day East and West introduced the union concerning currency, economy and social security ().
On 9 November 1989 East Germany opened the borders for East Germans and East Berliners, who could then freely enter West Berlin. West Berlin itself had never restricted their entry For West Berliners and West Germans the opening of the border for free entry lasted longer. The regulation concerning one-day-visas on entering the East and the compulsory minimum exchange of 25 Western Deutsche Marks by 1989, continued. However, more checkpoints were opened. Finally, on 22 December 1989, East Germany granted West Berliners and West Germans free entry without charge at the existing checkpoints demanding only valid papers. Eastern controls were slowly eased into spot checks and finally abolished on 30 June 1990 the day East and West introduced the union concerning currency, economy and social security ().