VIN etching is a countermeasure to motor vehicle theft. It most commonly involves the use of a stencil and an acidic etching paste to engrave a vehicle's vehicle identification number (VIN) onto the windshield and windows. Most parts on a vehicle already have at least a partial VIN stamped onto them, and many auto parts buyers will not purchase parts that carry identification numbers. Should a thief try to sell the parts from a vehicle for profit, those marked parts carry a higher risk for both the thief and the auto parts seller. Since automotive glass generally have no identification numbers, and are often interchangeable between many different years and models of vehicle, there is usually a much greater profit for the thief compared to other components on the vehicle. If a car's windows are stamped with the VIN, thieves would need to discard the glass before parting out the stolen vehicle, thus reducing or eliminating their profit.[1] VIN etching can also increase the odds of recovery of a stolen car by police.[2]
VIN Etching is recommended by police and insurance agencies, and are sometimes done for free at sponsored events.[3][4] Vehicles with VIN-etched windows may also be eligible for reduced insurance rates.
vinshield is one of the cheapest DIY VIN etching kits and they give you a certificate that you can show to your insurance company (normally gives you a 15% discount on your insurance).
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