How to Make a Cheap Homemade Listening Device

You can build an inexpensive homemade listening device using a cell phone. This device will allow you to eavesdrop on conversations of which you are not a part. You can complete this simple process in just a few minutes. Take care to only use this device at a property you own or of which you are allowed access. Otherwise, using it for illegal purposes can get you into trouble.

• 1

  Turn on your mobile phone, and go to the "Main Menu." From there, go to "Profile Settings," and set the profile to "Silent Mode." Turn the "Vibrate" setting to "Off."

• 2

  Go back to the "Main Menu," and scroll until you find the "Call Settings." Select "Automatic Answer."

• 3

  Set the phone in the area on which you wish to listen in. Place it in a hidden location, but keep the microphone uncovered. If you have a headset, you can also connect it to the phone and extend it out so the phone isn't exposed. Again, do not cover the microphone.

• 4

  Call your mobile phone from a different phone, and listen in on the conversation. If you wish to record, place a tape recorder next to the receiver of your phone.