- Showdown looms between Silicon Valley, U.S. states over contact tracing appsNBC News
- Apple and Google pledge to shut down coronavirus tracker when pandemic endsThe Verge
- iPhone And Android App For COVID-19 Contact Tracing Will Be Strictly Opt-In OnlyForbes
- Contact-tracing apps: a major test for privacy in EuropeEUobserver
- Could contact tracing bring the US out of lockdown?Vox.com
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