The tough questions on a digital contact-tracing app

New Zealand has recently shifted to Alert Level 3, and the Ministry of Health has plans to introduce a digital contact tracing app to help limit the spread of Covid-19.

What are some of the considerations that need to be made in using such apps? Will uptake be sufficient, privacy maintained, and results accurate? And who will not be able to take advantage of such technology? Dr Andrew Chen writes about these issues in an article on The Spinoff.