Four walls, a roof, a closed and locked door. Maybe your windows are closed too and shades are drawn. Are you now private? Absolutely not, if someone wants to observe you, there are many ways to do so. The list of ways to "bug" your house and your electronics is too long here, and constantly changing. However, there are some other ways to see and hear what you are doing that should be aware of:
- Acoustic Vibration:
- Millimeter Wave Radar:
- Infra-Red Imaging: