The robot supermarket shelf scanner and other news

BBC Click's Paul Carter looks at some of the week's best technology stories including:

  • Wikileaks co-founder Julian Assange was arrested by police in London after Ecuador withdrew his asylum.

  • The first home delivery drone service has been launched in Australia, after years of test flights.

  • Supermarket giant Walmart is to deploy autonomous machines across thousands of its stores in the US.

See more at Click's website and @BBCClick.