With cannabis now legal in some form or another in nearly half of the US, states and private companies alike are scrambling for a means of adapting DUI legislation to weed. To that end, Vancouver-based Cannabix Technologies Inc is developing what is expected to be the first "pot breathalyzer." It does exactly what it sounds like: providing law enforcement officials with an instant, handheld means of determining whether a driver isunder the influence of cannabis. The device is currently in its prototyping stage and is undergoing in-house testing. However, it's unclear when the breathalyzer will actually get into the hands of cops or whether it will be accurate enough to be of use once that time comes. "I think the first breathalyzer on the market will be a simple 'yes' or 'no' for the presence of THC at the time of the test, and in that sense it won't provide a quantitative evidential measure," Barry Knott, the chief executive of Lifeloc, which already makes alcohol breathalyzers, told Reuters. http://www.engadget.com/2015/07/13/breathalyzer-for-pot/ I'm pretty damn skeptical that they could make a device that only picks up if you're currently high lol But okay if they say so