First there were Google glasses - now the technology giant has shown off a talking shoe.
The concept, shown off at the South by Southwest music, film, and interactive festival in Austin, Texas, makes use of a custom-made microcontroller on the tongue of a pair of adidas.
A speaker provides audio feedback to the wearer and encourages or discourages certain activities, such as running, depending on the shoe's ''personality''.
It has an accelerometer and gyroscope, as well as pressure sensors on the bottom so it can detect movement and collect data that can then be sent to a smartphone.
A Google representative trod carefully when discussing whether the shoe would come to market, telling technology blog Engadget that Google was not entering the footwear business.
''The whole reason we're doing this ... is to show what happens when you collect a lot of data and use that data to tell interesting, funny, relevant stories in new and different ways,'' the Google representative said.
Another representative later told CNET it was an ''experiment''.
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