Amazon unveils new Guard Plus subscription for $4.99 per month

Amazon Amazon has unveiled a new Alexa-powered security service called Alexa Guard. The announcement came during Amazon’s annual devices event on Thursday afternoon. The service will cost $4.99 per month, or $49 per year.Guard Plus is an upgrade to Alexa Guard, a free service that enables Alexa to listen for signs of danger while you’re out of the house and mimic your daily smart-light usage.When you set Guard Plus to Away Mode, Alexa will listen for unusual activity, and push an al