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Contact-tracing apps follow the movements of a person’s mobile phone using technology such as bluetooth low-energy sensors.
With the concept of contact-tracing, people and government intend to trace the movement of individuals and their precise location.
Having this information can enable to alert all those who were in proximity of a person found positive for coronavirus for the last 14 days.
Hear this podcast to understand how such apps help check the spread of disease, as people can self-quarantine or start with steps to improve their immunity and treat early a viral infection.