https://www.reuters.com/article/us-health-coronavirus-google-apple/u-s-senator-says-apple-google-need-to-show-contact-tracing-will-not-violate-privacy-idUSKCN21X32M >Smartphone software makers Alphabet's Google and Apple will have to convince the public that any apps to help track who has been exposed to the new coronavirus will not lead to a violation of their privacy, Senator Richard Blumenthal said on Wednesday.