German authorities have launched a six-month test of automatic facial recognition technology at a Berlin railway station, which the country's top security official says could be used to improve security in the future.

A computer with an automatic facial recognition system shows German Interior Minister Thomas de Maiziere, center right, as he visits the Suedkreuz train station in Berlin, Friday, Dec. 15, 2017. At the train station, German authorities test automatic facial recognition technologies.

German authorities have launched a six-month test of automatic facial recognition technology at a Berlin railway station, which the country's top security official says could be used to improve security in the future.