RE:RE:RE:RE:Possible tech problems If you research this topic, there are various academic papers out there that describe where the limits of concealed weapons detection are at today with traditional systems. The traditional metal detection system is staffed 24 hours a day, is very large, is very visible and is limited to placement at normal entry points. This means that for it to be effective, you must block off all other access points (windows, hotel room doors, fire escapes, etc) for it to be effective. It's expensive to buy and more expensive to staff. Even the most advanced of such systems have very limited ability to identify the shapes of metallic objects. At best, a large belt buckle still gets confused with a gun. To make such systems effective at identifying weapons, you need to couple them with an x-ray system/conveyor and have people remove all metal from their person and send it through the x-ray. Even with that, you still need to have a skilled operator of the x-ray equipment looking for weapons and things still get missed. Those skilled operators would likely not even be available in an average organization because expertise typically costs money. Even with the best of conditions, best staff, etc you're probably still not looking at better than 94% specificity and more importantly, you are probably missing a lot of things altogether which is the other important number to look at and which PAT also has in the mid 90% range.
The fact that this system has the kind of numbers that it has, that nobody else has the technology and that it does not come with the limits described above is the part that makes it look pretty attractive as an investment opportunity. There's a large market globally. I think the main element of risk is that a larger player comes along with a copycat technology and markets it faster or has better capacity to mass produce it. This is always a risk with a small company that is rooted in academia has been immersed in R&D for a long while. However, with reasonable management of sales and logistical matters, there is definitely a lot of potential here.