McAfee Virus Scan enterprise features built-in, real-time on-access and automatic antivirus scanning and cleaning using the McAfee scanning engine.

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In such cases, wait time, if any, would be short because customers have already done the time-consuming chore of scanning and packing up groceries.

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The last time we saw T-rays, they were busy scanning bodies for tumors and security threats.

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And it will also take integration of technologies such as NFC, localization, barcode scanning and QR codes to drive personalized offers in real-time.

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Maris imagines UPS deliverymen scanning and delivering packages with just a glance, nurses at hospitals receiving real-time information on patients without having to stop what they're doing and, indeed, patients with limited mobility having greater access to the world of information themselves.

ENGADGET: Bill Maris, the Man Behind Google Ventures, on the Present Challenges and Future Potential of Glass