Buskers accept contactless payments and other news

BBC Click's Lara Lewington looks at some of the best technology news stories of the week including:

  • Virgin Galactic completes its second supersonic test flight in two months

  • Street performers in London can now accept contactless payments as well as small change

  • Google offers a new service which could help British homeowners find out what savings they could make by switching to solar power

See more at Click's website and @BBCClick.