Supermarkets, retail shops, gyms and offices are among the expanded list of venues to which the state government has given two weeks' notice to adopt the system, part of its COVID-19 response.

Mr Wright said he thought the changes would have "minimal impact" on a lot of local businesses, with many already taking up the system.

"I think a lot of businesses locally have adapted quite well to the implementation of QR codes, whether that be restaurants, takeaways, supermarkets, and even professional offices," he said.

"I know a lot of businesses, those professional-type businesses have adopted QR codes into their processes anyway."

But Mr Wright forecast issues could arise with the expanded mandate requiring check-in not just for dine-in but also for takeaway.

"I think what we may see is some frustration from customers when it comes to having to check-in a QR code to buy a bottle of Coke in a takeaway store," he said.

"...So that might cause some frustration, I guess it's a matter of educating the customers out there it's not the rules that businesses are making up, it's the rules they're required to abide by, so hopefully we'll see some patience from customers in respect to that."

The chamber president said "overall" people had "adapted quite well to the requirements", but he wondered if the expanded check-in system would affect some customer behaviour.

"I wonder if having to check in every single time might be enough for the odd person to not stop at a particular shop and have a wander around inside, or do a bit of browsing," Mr Wright said.

He appealed to the public to be "patient" as check-in expanded on Monday.

"We've all shown different levels of resilience and understanding over the past 12 months and hopefully customers will continue to show that little bit of empathy towards business owners who are really trying to do the right thing," he said.

SJ Shooter Real Estate managing director Laura Shooter said the Dubbo business had set up a Service NSW QR code at its office long before it became a government requirement.

"The safety of our team and the Dubbo community was always front of mind for us, so we made the decision early on to get the QR code just in case," she said.

"Dubbo is a popular destination for tourists and also a popular destination for people looking for the tree change, especially in light of COVID, so we just saw it as an extra measure that we could take to make sure our team and our community were on the front foot in case, just in case something happened."

Mrs Shooter said the measure had been received "really positively" by the public.

"We've not had anyone hostile about the need to sign in," she said.

"I think people are understanding and wanting to do their bit to keep each other safe."

Mrs Shooter also encouraged "people to consider how their actions impact on the livelihood of business owners".

"We've got so many great businesses in Dubbo, and we stand to lose a lot if we do get an outbreak, or if people aren't following the rules and they have to make them more extreme," she said.

LETTERS: Do you have something to say? We welcome your letters which may run in print and online.