Mundane spy gear

This is just reviewing what is currently available for mundane spying. The point is that nanotechnology is not needed for perfectly adequate spying on the average person.

More useful surveillance information can come from:
your phone records, online activity, credit cards and financial info. All of which can be easily tracked. Plus there are a billion camera phones and digital cameras already.

Below are some sites for commercially available spy gear.
These are covert listening devices or detection devices. Professional grade gear can cost $10,000. More expensive gear has higher quality microphones, more channels for recording, a writable optical drive for the recordings etc…

Brick house security
Spy associates blog
Buzzle editorial
Higher end audio surveillance gear is described
More from spy techs

Detection devices
Spy detection spy nyc

Other reading:
Satellite surveillance and the soon to be common gigapixel cameras

City wide blimp monitoring

Military surveillance

Government monitoring of cities

Super high resolution Lidar