Faultline could be found in long-lost territory this week, seated non-virtually in the audience of an intimate technology talk event. Conscious that the subject matter of this Bristol-based basement show might lie a little outside our usual remit, we arrived with modest expectations (and one of our smaller notepads) – so we couldn’t quite believe our luck when proceedings were opened by a voice tech start-up that felt strangely familiar. “This is a world-first for buying a physical product directly from an audio ad,” declared Charles Cadbury, CEO at London-based Say It Now, following a video clip demonstrating an actionable audio ad being summoned to purchase Berocca (a popular dissolvable multivitamin) via simple voice commands to an Amazon smart speaker.…