Tech Tent

The tech giant takes its Alexa smart assistant out of the home. Plus, are neural interfaces the next big thing in how we control computers? And, the Facebook-backed Libra digital currency has met with opposition from governments. Can the project get back on track? Presented by Rory Cellan-Jones, with BBC tech reporter Chris Fox, and special guest, Caroline Carruthers, business author and data consultant.(Image: Eyeglass frames with voice-activated digital assistant Alexa at Amazon's headquarters in Seattle, Credit: Glenn Chapman/ AFP/ Getty Images).