One digital technology from the article that I found most interesting is digital contact tracing using Bluetooth-enabled smartphone apps, such as TraceTogether in Singapore.
These apps automatically record when two users are near each other by exchanging anonymous Bluetooth signals. If someone later tests positive for COVID-19, the system can quickly alert all recent contacts so they can self-isolate or get tested. This reduces the delay and human error found in manual contact tracing, helping to stop the spread of the virus more effectively.
In my opinion, this technology had a significant impact during the pandemic. It showed how data and connectivity can strengthen public-health responses when used responsibly. Although challenges like privacy concerns and limited user adoption remain, I believe digital contact tracing has changed the way societies think about using technology for collective health protection.
