Yeah I read up on this too, very interesting. It looks at your retina and identifies people who "might" be on something, who would then have to take a more complete and accurate urine test.
So I doubt it it would tell the difference between wellbutrin and other amphetamines. The subsequent urine test would though.
I have actually contacted this company to see how to become a distributor. I already have the software skills and I already sell to HR departments, so this seemed like an easy way to expand my offerings.