There are plenty of covert listening devices that fall into the category of cell phone listening devices. These are among the most useful of listening devices because nearly everyone has a cell phone. Additionally, cell phones are always being forgotten, lost, dropped, or left somewhere to charge. Because they are such a familiar part of our modern landscape, using cell phone listening devices is a great way to stay informed and in the loop with information that you might need to know.
Most cell phone listening devices that are inexpensive merely look like cell phones. They cannot function as cell phones in a regular sense, but they look the part. As long as your target does not try to actually make a call, you are usually okay. Some of these cell phone listening devices work more like scanners. But instead of holding a scanner, you hold the cell phone up to your ear as if you are talking and then listen to the cell signals that you intercept.
Other cell phone listening devices work as more traditional bugs. You leave them in a room and they pick up the sounds around it. Others can help you hear both sides of the phone conversation. You simply plug the cell phone bug into a phone jack and then it transmits both ends of the conversation to your listening post. You can listen in while the conversation is actually taking place, or you can set up a recorder to capture the transmission while you are gone.
The best cell phone listening devices, however, function like regular cell phones. These are special phones that allow the target to make phone calls and that also allow you to listen to the calls. Additionally, you can even listen in to what is going on around your subject, even if the person is not actively using the cell phone bug. This is extremely useful for many purposes. You can give them to employees for company use (and monitor what they are doing on company time) or use them to keep track of your kids or partner. There is plenty you can do with cell phone listening devices.
