A dash cam, dashboard camera, car DVR, or car black box is an onboard camera that continuously records the view through a vehicle’s windscreen. It may be attached to the interior windscreen or to the top of the dashboard, by suction cup or adhesive-tape mount. Dashcams may provide video evidence in the event of a road accident. During parking, some dashcams still can capture video evidence if vandalism is detected.
To ensure that recorded video files are not tampered with once they have been recorded best front and rear dash cam 2018, videos can be timestamped in a tamper-proof manner, a procedure termed trusted timestamping. One method for trusted timestamping video files involves immediately storing the unique hash of the file on the decentralized Blockchain of a cryptocurrency to securely prove its time of existence.
To ensure a reliable 24/7 parking surveillance when capacity is an issue, a motion detector may be used to record only when an approaching human/vehicle is detected, in order to save power and storage media.
Dashcams are widespread in Russia as a guard against police corruption and insurance fraud, where they provide additional evidence. They have been called “ubiquitous” and “an on-line obsession”, and are so prevalent that dashcam footage was the most common footage of the February 2013 Chelyabinsk meteor, which was documented from at least a dozen angles.
Thousands of videos showing automobile and aircraft crashes, close calls, and attempts at insurance fraud have been uploaded to social sharing websites such as YouTube, Facebook, Twitter, Yandex, and other websites. In the UK, sales of dash cams rocketed in 2015, which was the fastest growing consumer electronic, with sales increasing by 395%. In China, dash cams were well known by a dramatic event of a road rage.  Dash cams have also captured numerous aviation accidents, such as National Airlines Flight 102 in 2013 and the Shoreham Airshow crash in 2015.
Source : – bestfrontandreardashcam.com---
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