Four types of wireless spy cameras are nanny, body-worn, tiny hidden, and remote view spy cameras. Many of these cameras also serve as fully-functioning devices they appear to be.
SleuthGear creates many types of wireless nanny cams. Designed to look like everyday items, the cameras can stream live video to a PC, DVR, or other receiver.
Body-worn and tiny hidden cameras typically look like items of clothing or jewelry, such as a hat, a tie, a watch, or glasses. Many of the cameras come with remote controls and are compatible with multiple DVRs.
Remote view spy cameras can stream video from multiple cameras. Most of these cameras require an Internet connection and upload to FTP files.