A few years back, brothers and inventors Massoud and Mahmud Hassani unveiled a clever and widely-celebrated landmine clearing device resembling a giant dandelion puff that rolled over terrain like a tumbleweed, detonating and clearing landmines in its path. The rolling device called the mine kafon also had an onboard computer that logged the GPS locations of any discovered mines to help map areas that were likely heavy with landmines as well as safe paths.