You have to differentiate though, it is one thing to have a shell venturing into medical marijuana, it is totally different to having one of the largest cannabis companies in the world use your technology for their security ...
Remember these are $Bn companies and operations, it is no different to having the likes of BHP or RIO pick it up for their mine sites etc
I'm not too sure about the US competition ... what I do know is that I sent the technology to one of the guys who started one of the Top 4 Canadian listed weed companies, he shortly after requested from the company a pilot trial on a venture he is personally setting up. So it must have some merit !