Security Wireless Camera
An outdoor wireless security camera can be used in a home security system, indoors and outdoors. Wireless cameras come in all shapes and sizes. Some types are waterproof and can be hidden away in outdoor plants or other nooks and crannies. There are also wireless video cameras with night vision.
One advantage of using a wireless camera for outdoor security is that one does not need to do extensive preparatory setups or wiring. If you decide you would like to have your camera in a different location, you simply move it over.
A wireless security camera is also good for temporary uses. For example, if you want to set the device up in a certain location for a specific event or time period, it is easy to do so, and to then move it later.
Spy Camera
A spy cam is just what the name says - a hidden wireless camera used to spy on people. Modern forms and uses of spy cams seem to be becoming more and more creative. They can be incorporated into pens, can be as small as a USB flash key, disguised in glasses, or simply so tiny that it is easy to conceal them within clothing. Some spy cameras also come with tiny microphones and listening/recording devices. You can even find backpacks with a hidden camera installed in them (this might be useful in case you want to keep close watch on whomever is hiking behind you.)
A Nanny Cam
Surveillance cameras can be used by parents to keep an eye on their children's babysitters (to make sure they don't abuse the children, or raid the fridge too often), or they can be used by nannies to keep an eye on the children themselves. They can also be used to watch over pets from afar or from another room. The use of wireless cameras can get pretty innovative too - one recent example I saw was a wireless camera disguised in an air-freshener. In some cases, these wireless cameras come with portable hand-held monitors so that you can always have an eye on your child as you move through the house.
Some types of wireless nanny cameras (or surveillance cameras) display the image on a cell phone (if compatible), PDA, Internet web browser, or a standard video display. Some cameras are even equipped with heat sensors which will alert you by email any time someone enters a room.
These cameras also have remote control functions which allow you to change their position and pan to get a new view, from wherever you are.
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