Portability and small size
Our world is becoming portable. This is even trite to recall. The world shrinks and becomes really crowded, appliances, reduced in size to the obscene, nanobots travel through their nanorobotskoy square centimeter (or nanoroboticheskoy?) Of the universe, and people of all this, for beauty is lost, lost ... and we are gradually replaced. Robots.
I'm talking about? Previously, it was necessary to portray the superspy stuffed-art (at that time), technical means of surveillance and destruction of hostile objects. Arsenal have always distinguished the spy thing: they were tiny and always disguised as something else. The camera is in a lighter, a gun that looks like a pen, a capsule of poison in the form of a tooth, a tape recorder (bobinnyy!) the size of a book.
Now with the miniaturization easier. Everything has been minimized so that some tiny bagatelles decisively inconvenient to use, and manufacturers, realizing this, and following the lead of the new market trends, they artificially increased, putting a lot into the past of unnecessary functions, which is why sometimes this thing swells up and becomes greater than its counterpart, and even a pair of three generations ago. But it's more of household appliances, which has always claimed to be anything more than was in fact.
And among the non-residential, highly specialized instruments come across so small that before this could only be seen in spy movies. For example, now you can build a fully autonomous mobile spy video system that will record good quality images with sound card on Compact Flash. The fact that this system is autonomous (battery powered), you can use it in the most bizarre goals. The following video craftsmen put the whole video recording system for radio-controlled model airplane:
But with a camera such a plane can be very accurately to send you anywhere :)
The first thing I was interested in how much such a system is autonomous. So, the camera's battery will last for 3, 6 or 9:00, depending of course on the model. In addition to the battery, it is clear that the autonomy of the affected memory capacity. I would choose a little more just in case - "stick" to 4GB. On this card can be written in a very, very average, as about 14 hours, and at almost the highest - 5 hours continuously. Given that the camera can work not only continuously but also in the mode of inclusion of the motion sensor, or by voice, it turns out well. In addition, if the camera is installed in a room, you can bypass the restriction on the battery capacity by connecting the camera via the network adapter.

Here is the video recorder m-AVR (micro Audio-Video-Recorder)

And this camera
In the car, too, the device can be connected to the adapter. Using the terminology of some of the mega blogger, in my humble opinion it is - megapoleznaya thing. After installing a video complex, we have in the car a "black box", without stopping recording everything that happens on the road. The usefulness of such a box will be immediately obvious to everyone in the event of dispute on the road. A record can be set to infinity, when new information erases the previous one.
Yes, it is left to come up with a device, translating what is happening with the camera directly to the video blog motorist connected to server traffic police ... How do you like the idea?