By Greg Bensinger and Arriana McLymore SAN FRANCISCO (Reuters) -Amazon on Tuesday unveiled a refreshed lineup of devices optimized for home security and its new artificial intelligence-infused Alexa+ voice assistant. At an event in New York, Amazon showed off Echo speakers, Fire TV streaming devices, a new Kindle reader and improved Ring and Blink cameras. Amazon is trying to drive interest in the new Alexa, which it spent years updating with AI for better personalization and a more conversational tone. The Seattle firm said its new Echos, including smaller Dots and Show devices with screens that range from $99 to $219, will be enabled to work with Alexa+ and feature new silicon chips for faster processing. Amazon also rolled out improved cameras for its Ring devices for better home security, including facial recognition to help ward off unwanted visitors. (Reporting by Greg BensingerEditing by Marguerita Choy)
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