Micro aerial vehicles
“Micro aerial vehicles” – no larger than a common house fly – is currently being developed by the US military and could enter mass production later this decade.
These machines could be used in spying missions
These machines could be used in spying missions, recording and transmitting audio-visual information. An individual robot would serve as a literal ” fly on the wall ” – equipped with miniature cameras, microphones, modem, and GPS. Many terrorist cells could be infiltrated thanks to this radical new technology.
Sufficient battery power in such a small object
One of the major technical hurdles will be creating sufficient battery power in such a small object, as well as keeping them light enough to remain airborne. Advances in nanotechnology may solve this problem. Together with improvements in computing power, this would allow circuitry and components to be packed more closely.
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More sophisticated versions might be developed for assassin roles
More sophisticated versions might be developed for assassin roles. These would have capsules in the abdomen of the insect, filled with cyanide or another lethal toxin. This would be delivered to the target via a small needle capable of piercing human skin.
Some robots might work in groups
Some robots might work in groups, forming networks to extend their range and abilities. Further, into the future, enormous swarms of these machines might be deployed on the battlefield.
What are our concerns?
However, concerns may be raised as to how this technology affects the safety and security of citizens. It would add more weight than it would produce currently, in the future and (they probably are)using graphene and new energy storage solutions(like Dyson is funding into), yeah this could easily be done, right now it would be impossible to fly something that size, with the specs written- for more than a minute or two.