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CES 2018: Optoma 4K projector responds to Alexa voice commands

If you want to fire up your 120-inch screen with a voice command like “Alexa, turn on the projector,” Optoma’s newest effort is at your beck and call. When it goes on sale in April for $1,700 (roughly converting to £1,240 in the UK and AU$2,150 in Australia), the UHD51A will be the first projector to feature direct compatibility with …

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Invi Bracelet releases a nasty smell to ward off attackers

At an unassuming table in a CES exhibition hall, a Dutch company had what looked to be a handful of hair ties on display. But unbeknownst to people passing by something much more potent was being shown off. It was a bracelet that releases a nasty smell to ward off an attacker. It’s called the Invi Bracelet and is a …

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