Before you purchase and install a dash cam in your car, you may want to research whether dash cams are legal where you live. While these devices are legal in many areas, two major legal issues can get you into trouble.
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The first problem with using a dash cam has to do with blocking your view out of the windshield, and the second has to do with electronic surveillance. Since these issues vary by state, be sure to check the laws in your area before driving with your cameras on.
The first legal issue you may encounter with a dash cam is that most of these devices do not attach to your dashboard. Instead, they are designed to be attached to your windshield using a suction cup mounting system.
This is an important distinction, because many jurisdictions have restrictions on the amount of coverage a windshield can have from devices such as GPS navigation systems and dashboard cameras.