A navigation installation (1) having a broadcast radio receiver (6) for
extracting information transmitted in encrypted form from broadcast radio
signals, having a navigation unit (7) and having a data storage medium
reading unit (8) is described. The navigation unit (7) is set up to read
decryption data (ED) stored on a data storage medium (9) with the data
storage medium reading unit (8) and to extract encrypted information
using the decryption data (ED) which have been read.