DailyDirt: Fingerprints And Watermarks On Everything?

Making copies of physical goods is becoming easier and easier all the time. Some folks want to make sure that all these physical items are authentic, devising fingerprinting or watermark technology to identify objects uniquely. Dollar bills, documents and all kinds of valuable things could be tracked with this kind of anti-counterfeiting tagging. Here are just a few other examples of making a mark on stuff that could be useful.

• SmartWater is a chemical fingerprint spray that can help identify thieves (who get caught) by covering them with a durable watermark. This stuff can stay on skin for months, and SmartWater has been a commercial product for decades now. [url]
• Actual fragments of DNA injected into underground wells could help track hydrothermal water for drilling optimal wells for geothermal energy production. DNA-encoded materials can identify where water flows underground, and they're a bit more environmentally friendly and durable than radioactive tracers or chemical dyes. [url]
• Wrinkled silica polymers can be formed into artificial fingerprints that could be used as anti-counterfeit tags. If artificially intelligent robots are going to take over the world someday, maybe we should give them fingerprints just like us. [url]

After you've finished checking out those links, take a look at our Daily Deals for cool gadgets and other awesome stuff.

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