Not sure if I'm understanding... you mean pretty much everybody is expected to haul the bike to the original dealership/mechanic to certify it? And I'm guessing you meant "bike" where you said "book".
The safety certificates are purchased in a book. That book is issued to a specific location. That location i inspected by the MTO enforcement people. When they come they want to see a list of things such as measuring devices for brake rotors, a way to lift the vehicle, headlight aiming equipment etc. They also want a letter from the local planning board that states the zoning is right. Only after all the requirements are met they license that location for doing safeties and the owner can now purchase safety books.
The regulation states that safeties MUST be done at the location that the book was issued too. Also every safety has to have a co responding invoice and that invoice number has to be written on the back of the shop copy. They audit the shops and there are nice fines for each violation.
What Ted does is not permitted thats why you cant find anyone else to do it. I personally couldnt care less but he is risking alot for the sake of making $60. Seems stupid too me. I am amazed he hasnt been caught yet. Let alone his Mr. Magoo safety style.