To identify and categorize the Authentic artworks from the fakes, a sonic fingerprinting method has been developed. The painting i shit by a rubber hammer and the vibrations are receorded. Based on this information one can easily find out if there are cracks in the painting, if it needs restoration or can it be restored. It also can be used to prevent fraud art work. But the system is expensive at 26,000 $ to 28,000 $ per finferprinting and for accuracy the process has to be repeated every few years.
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