A panel of US senators questioned officials from Apple Inc and Alphabet Inc's Google on Wednesday about the dominance of their mobile app stores and whether the companies abuse their power at the expense of smaller competitors.

US senators question Apple and Google on app store dominance

Apple and Google have released a software tool that will make it possible for nations to release coronavirus contact-tracing apps. Together, the tech giants rolled out a COVID-19 exposure notification system, essentially a unified programming interface that will allow public health departments to create their own contact tracing applications.

Apple and Google launch digital COVID-19 contact tracing system

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US senators question Apple and Google on app store dominance

Apple and Google launch digital COVID-19 contact tracing system