Buenos Aires Adds ZK Proofs to City App in Bid to Boost Residents’ Privacy

The service, QuarkID, has been integrated into miBA, the city’s seven-year-old app for accessing municipal services and documents. The idea, in short, is to give 3.6 million porteños – residents of Buenos Aires – greater control over their personal information. The ZK proofs will let users show that a document has indeed been authenticated by the government without disclosing information that is irrelevant to the task at hand.