Although ID and password are two items, because they belong to the same authentication factor (knowledge), they are single factor authentication (SFA). It is really because of their low cost, ease of implementation and familiarity that passwords that have remained the most common form of SFA.
The 1936 Berlin Olympic Games had been handed to Berlin before the Nazis came to power but now it was the perfect opportunity for Hitler to demonstrate to the world, how efficient the Nazi Germany was.
Image caption The first Olympic Stadium was built in less than a year. The 1908 Games were meant to take place in Rome but London offered to step in after the eruption of the volcano Vesuvius in 1906.