See that totally depends on the contribution, and what the Principal Investigator thinks about the contribution. Very correctly said, there are no fixed rules, so it totally depends on the Principal Investigator.
Hi Fathi, the International Committee of Medical Journal Editors have guidelines about who can claim and should be given authorship. http://www.icmje.org/fcgi/search?q=authorship
The short answer is NO, the technician is not an author by what you describe.