3D printers are on my radar, but not any time soon.
In a nutshell, they are a ‘robot’ that allows you to print layer by layer a shape. The more complex printers will allow rather fine shapes, but even the cheap ones (under 300 bucks) can do some cool stuff.
For the past little while, over here in The States, you have been able to hop online and pull down a file that you can feed into your printer and out pops a gun. It made a bit of splash when it hit the news, but soon died down once people saw they were pretty bad guns.
Of course, Australia being Australia had to one up the war on geeks.
http://www.engadget.com/2015/11/23/3d-printing-guns-new-south-wales/
The Australian state of New South Wales has made it illegal to possess the blueprints necessary to make your own projectile weapons. Lawmakers have passed an amendment to the Weapons Prohibition Act 1998 that makes it a crime to own information necessary to produce guns, like the Liberator. If a person is found to have “digital blueprints,” they could face a prison term of up to 14 years.
So yeah, the USB stick in your pocket….?? Better hope that it does not have any plans on it that look even vaguely like a flare gun….