What is a mobile business?  

A mobile business is one where you do not need special premises but instead go to your customers either in person, if you are a mobile hairdresser or cleaner, or online if you have a webshop selling goods or services such as translation. 

More information
See for example this barber who comes to your home. 

http://www.kliphinnerup.dk/index.php?side=personale