/Passenger. is really Michael David Rosenberg from Brighten and Hove, England.

At age 16 he had his first performance and he liked it so much that he quit school and went on a Busker Career throughout the U.K. and then on to Australia for two years.

He chose the stage name of /Passenger. with a right slash at the front of the name and a dot at the end of the name. 

I can find no information as to why he chose /Passenger. as his stage name or the importance of the Slash and Dot.

There is a regular band that accompanies David and most fans think of the entire group as /Passenger.

You now know as much as I do about the singer.

To date /Passenger. has released 13 albums.

Enjoy