New designs the size of small birds or even insects offer the possibility to fly cameras and microphones into places without anyone being aware they are there..
How should the law respond to this?
Someone climbing into your garden to look through the window can be arrested for trespassing, unless it is a police officer with a warrant. Even the police need permission from a judge before they can put listening devices into people’s homes. Yet an aircraft flying overhead isn't trespassing even if it was using a high definition camera. How can a judge decide what makes for an invasion of privacy or trespass?
What about these cases? Are they an invasion of privacy?
Data gathering at public meetings or festivals by the police for "public safety". Should they still need a warrant?
Campaign groups flying UAVs over private land collecting evidence of illegal hunting or other environmental damage.
A criminal uses a quiet UAV to work out how best to commit a burglary.