It is safe when you have metal detector because it can also sensor thieves or shoplifter who wish to bring clothes outside the store. Metal detectors are useful to find hidden metal objects and can detect not just nearby but even metal objects buried underground.
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Engraved shells created by Homo erectus dating as far back as 500,000 years ago have been found, although experts disagree on whether these engravings can be properly classified as ‘art’.[1][2] A number of claims of Neanderthal art, adornment, and structures have been made, dating from around 130,000 before present and suggesting that Neanderthals may have been capable of symbolic thought,[9][10] but none of these claims are widely accepted.[
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