We present our latest system for outdoor AR, named Tinmith Backpack 2004. This system
replaces the previous Tinmith-Endeavour designed in 2002, which replaced the original designs we
developed in 1999. The goal of our work is to support experimental outdoor AR research, such as
our 3D modelling system Tinmith-Metro. We have been designing backpacks since 1998 in a
similar spirit to various others . We require both video and optical overlay AR to be performed on a
mobile platform, and currently use the following devices: Dell Inspiron 8100 laptop; Trimble
Ag132 GPS or Trimble 4700 RTK GPS; InterSense InertiaCube2; IO-Glasses PAL, IO-Glasses
SVGA, or Sony Glasstron PLM-S700e