The initial link that I provided to a "Province" (newspaper) article related to the arrival of iris scan technology at YVR
it's gone by now.
To clear up a bit the issue, here are some quotes from that article written by Lena Sin, highlighting advantages and restrictions of using this technology at Vancouver Airport:
"... allows preregistered travelers to pass through customs simply by looking into a camera that recognizes the irises of their eyes as proof of identity"
"... speeds up the customs process by taking people we know and people we trust out of the customs line."
"... intended to swiftly clear low-risk travelers and give customs officers more time to target higher-risk travelers"...
"Members insert their Canpass-Air (name of the program) cards into a machine, their irises are photographed, and they can enter Canada without further checks unless randomly selected for inspection. Taxes and duty can be paid using a credit card."
"Citizens and permanent residents of Canada and the United States are eligible to register with the program. Background checks are done, and only people with completely clean records will be allowed to enroll."
"... we will . . . make sure anyone [registered] has no infractions with police, CSIS, FBI, Interpol and customs ..."
" [IRIS SCAN TECHNOLOGY] ... It registers 240 data points, said Guy Lalonde of the information technology branch of Canada Customs. In contrast, fingerprints measure 80 data points."
"The chances of a false recognition are less than one in a million"
]...There are 1,500 members so far. The airport has four iris-recognition machines and the program cost $35 million."
Toronto is expected to implement Canpass-Air kiosks this fall and Montreal will have the program by spring 2004.