People, you are some of the brightest and cleverest people walking the earth. And the earth has some nasty problems. They won't be solved by meaning well or looking cool.
In my early days I worked with homeless and mentally disabled people, I migrated to government policy to solve larger problems, but I was perpetually frustrated by the refusal to ask hard questions of stuff that sounded good. And you know what? I am so sorry to tell you, but there are people who have noticed this persistent absence of accountability, and who are willing to exploit it.
I have no particular reason to believe that the designer in the OP is a cynic. But you do his effort to help no favors by upvoting it to the moon because it looks cool. The informed and thoughtful critique in the comments DOES help, and a dialogue talking about the potential application of design to the problem would help still further. Here are a few ideas: - Kids ignore warning signs around mine fields -- why not design hideous boundary demons to frighten them off? - Design "clear trail" markers apparent in all weather and easily moved to reflect cleared sections? - Mapped displays of mined areas as targets for Apple vs Microsoft battles to see who can clear more? - Does the computing power of Raspberry Pi offer new possibilities for cheap clearance -- maybe gather seismographic data with controlled explosions to be analyzed for "echoes" of a landmine? - Declaring total clearance is a problem, what if there were a program that took 99% cleared land and used as grazing pasture for 10 years so the cows can find the missing bombs?
These don't strike me as half bad and I suck so I expect most of this board can come up with better and more detailed.
The guy is trying to do something and that's great. But let's not just congratulate him and move on. Let's actually think about whether the damn thing helps, and if not, how design could help more.