I dunno, time will march on and this nut will be cracked as well.
Right now the Hound Dog thing sounds like it's further along, and according to their site, it works regardless of smoking or edibles (guess that includes vaping)... but they seem to be focusing on delta-9 THC, while the Cannabix unit is focusing on the delta between 2 different kinds of metabolites of delta-9 THC (it's on their site, both variations of delta-11 THC).
While some states agreed on a delta-9 in the bloodstream number (and that number was pulled out of thin air, and has valid critics), I've never been on board with that.
More importantly, they are ONLY testing for these items, they are not testing for CBD, which seems a wee bit unfair, since it modulates delta-9 THC. But hey, SCIENCE
(c'mon folks at least be HONEST)
So buckle-up folks, it's gonna get interesting. This train's comin', sooner or later.
I'm fine with Lyft or a designated driver.