Picked this up in Nova Scotia, misread the tracking number and got a 'not in the registry' message. Several attempts (and several weeks and a whole lotta kilometres) later, a new attempt at reading the number (assisted by an iPhone camera and the contrast enhancing ability of the Photos app), was successful, and the TB was able to have his journeys be tracked again.
Added a higher contrast (and larger} copy of the number to the tag. It may help in getting new logs without the multi-momth gap of his ride with me.
bon voyage!
TW