By Lauren Hirsch (Reuters) – Amazon.com Inc <AMZN.O> is investing between $250,000 and $500,000 in Bluetooth technology company TrackR to extend the reach of its Alexa virtual assistant, according to a source familiar with the matter Alexa is the cloud-based system that controls the Amazon Echo, a speaker system launched by Amazon in 2014 that … Continue reading Amazon Invests in Bluetooth Tracker for Alexa