Portable air purifier, 'smallest' Xbox and other tech news

BBC Click’s Jen Copestake looks at some of the best technology news stories of the week, including:

  • Ghost Robotics' robo-dogs team up with the US Air Force to guard the perimeter of a military base

  • Microsoft reveals “smallest Xbox ever” - the Series S - will go on sale in November

  • Consumer tech show IFA goes ahead, with an emphasis on coronavirus-related products - including a wearable scented air purifier

See more at Click's website and @BBCClick