SINGAPORE - Even before the Covid-19 pandemic hit and contact tracing became the norm in Singapore, Sengkang General Hospital (SKH) was already on the trail of people who came in close contact with those who had infectious diseases such as chicken pox and tuberculosis.
But instead of using Bluetooth tech like the Government's TraceTogether tool, SKH has been using a mix of radio-frequency identification (RFID) and Wi-Fi.
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