by the intended user when that user reaches the appropriate marker a security directive can instruct the user on how to proceed once the marker is reached a mandatory warning message can alert users to existing problems and dangers in the vicinity of the marker the system according to the present invention is described in more detail with reference to the drawings in fig1 the system 1 obtains real time video and digitized images 8 from the connected video source 9 which is typically an attached video camera or online video source the digital images 8 are transferred to a tracker module 7 where the digitized images are processed the tracker 7 is capable of detecting the coded markers 13 seen in fig2 a 2 f that are captured in the images 8 referring also to fig5 the markers 68 71 72 73 and 75 are seen to reside on equipment within a factory environment and are visible in the displayed view 69 tracker 7 is also responsible for computing the relative position or pose of the video source 9 with respect to the coded markers referring to fig2 each marker 13 includes a relatively thick rectangular frame 14 and a coding matrix 15 surrounded by the frame 14 while the matrix 15 may be of any size in this embodiment the marker 13 includes a matrix 15 which is formed with.