Fans who flouted the rule were scolded by security or told to scram.

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To help spot factory or commercial goods sellers, which Etsy calls "resellers, " it uses a software program called SCRAM, which can identify problem sellers by predicting the rate and sequence by which they set up their shops.

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Walter Herrera, quality control and risk manager for the Chilean mining company GeoTech, has said his company was bringing a specialized device -- a Scram T-130 drill typically used for boring water holes -- to the San Jose mine.

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Moving directly against scan-and-scram, Best Buy began a relationship with Red Laser, the company behind the mobile app that best enables showrooming: the app now lets Best Buy offer coupons and one-click ordering on Bestbuy.com to customers already in the store.

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