Hi Nutloose, I'm not implying that your suggestion is not good or helpful but....
On another post this chap states that he is a graduate engineer in the planning department of a large African Airline clearly on a type that is complex enough to require portable oxygen and megaphones. Now maybe something has been lost in translation here but it sure as hell scares me when I see someone looking on the internet for suggestions on how to track lifed components on aircraft that are already operating and where unauthorised and/or uncontrolled robbery appears to be accepted as a fact of life.
If this was from someone in a large UK airline I would be horrified then again maybe they operate into the UK?