German authorities are considering equipping police with a smartphone app that would instantly recognise illegal neo-Nazi songs.
Already dubbed the "Nazi Shazam", after the music identification program, the software would allow authorities to react instantly if far-right songs were played on radio, at concerts or demonstrations.
A song can plug teenagers straight into the ideology conveyed through the lyrics
The interior ministers of Germany's 16 regions will discuss the new practice at a meeting in Osnabruck this week.
Considered by experts as a "gateway drug" to the neo-Nazi scene, 1,090 pieces of music with a far-right or racist message are currently indexed by the Federal Review Board for Media Harmful to Minors, restricting their sale and making them inaccessible to people under 18.
They include traditional Nazi marching songs as well as more recent songs by bands such as Hate Society, Zyklon B and the British group Skrewdriver.
Simone Rafael, of the website Network Against Nazis, said she approved of the initiative and that it would help police or watchdogs attending far-right events.