Workplaces, universities, schools, TAFE, supermarkets, and more will be required to use a Service NSW QR code from July 12.

The Service NSW app used to trace Covid-19 through QR codes is experiencing a service shortage, prompting outrage from business owners.

All NSW workplaces and retail businesses will be required to use Service NSW QR codes from next month.

State government reminds hospitality businesses and hairdressers they need to use the Service NSW QR code system come January 1.

QR codes can house a whole lot of data, from the URL of a webpage or service, to where to directly download an app. Here's how to scan them.

Everyone in NSW is going to have to check in using the Service NSW QR code whenever a work or at the shops starting from next month.

The COVIDSafe QR code check-in system in NSW is one of the major tools used to prevent lockdowns with the system being expanded and new changes being introduced this month.

Ms Berejiklian said the standardised QR code system had proved vital in the fight against COVID-19 and had helped prevent multiple statewide lockdowns.

The NSW Government is considering making the Service NSW smartphone application mandatory for businesses that need to collect visitor data to allow for COVID-19 contact tracing.