I don't think we're held back by hardware: it's usually insufficient imagination.
Devices like smart lights (Hue) or smart speakers (Alexa) didn't use new hardware, and could have been invented a little earlier.
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Why don't browsers use history or Alexa rank to highlight trustworthy sites? Gmail already warns me if I haven't emailed a person/domain before.
This seems like a viable heuristic against phishing sites.
Amazon is exploring smart glasses (cf Google Glass) with Alexa! https://www.amazon.com/Echo-Frames/dp/B01G62GWS4/