![]() While some dash cams double as actual GPS navigation devices, others simply use GPS so that you can pinpoint where a video took place, which is important in the case of accidents or other incidents. A camera's field of view is important, as a wider-angle lens will capture more detail. Some also have a still camera built in if you want to take a snapshot on your route, though it's usually low resolution, not even at the level of a smartphone image. In the case of a collision, a dash cam with a G-Sensor will detect that action and automatically save the recording so you can view it later and use it as evidence if necessary. Many dash cams are set up to automatically record once you start the car, and to overwrite video once the internal storage or memory card is full. Consider purchasing the largest memory card a dash cam will accept so that you can store the maximum amount of video, and remember to transfer it to your computer regularly if you want to keep it. Most of the dash cams featured in this story record in at least 1080p video resolution, though you can dial that down in some cases to increase the amount of video you can store. Here's how to choose the right dash cam for you, as well as the top models we've tested. Some even double as action cameras and are compatible with tripod mounts, so you can take them out of your car and into the great outdoors. There's a varied landscape of dash cams out there, with a range of features including GPS navigation, safety alerts, and mobile app integration. For everyone else, it's just another piece of evidence to furnish to your insurance company in case of an accident or vehicle damage. Especially if you drive a company car or work for Lyft, Uber, or any other taxi service, having video proof of your role in an accident is crucial. Perhaps a less fun, but more important reason that drivers are putting dash cams into cars is to limit liability in accidents and capture vandalism when parked.
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