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Digital difficulties
Digital contact tracing is certainly not perfect. Users will need a smartphone capable of running the Bluetooth Low Energy system. The Financial Times reckons that around 2 billion phones won’t be compatible. Worse, digital contact tracing can only help where the people interacting are both using the system.

Researchers calculate that around 56% of the population would need to use an app for it to be successful – that’s four in five smartphone users. Yet many people have reasonable privacy concerns around how their data will be used, and they worry this could become permanent. In Australia, for example, the government has struggled to convince even its own MPs that its proposed app will be private enough.

In the UK, recent survey data provides room for cautious optimism: 65% of people agree with using smartphones for contact tracing. Among 55-75 year olds, support is nearing 73%, while for 18-34 year-olds it is 59%. Whether this will be impacted by the UK’s likely decision to build a centralised database of contact events remains to be seen.

Even then, there is another major issue. Not everyone agrees that digital contact tracing is effective against diseases – or how well it will work against COVID-19, where a long time can pass before people show symptoms and get tested. Widespread testing will still be needed, and digital contact tracing won’t prevent everyone from being infected.

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ДарьяТихонюк

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