I like that our store can be scanned by customers, without having an employee present at all times! It helps me keep my business open during COVID-19 related shutdowns as it allows us greater flexibility in operating hours than before scanning was available 24/7 (i guess you could do this now if your system is set up right).
The software itself isn't perfect - some of their products take longer or more clicks then they should have been able get through once we're logged into them properly but overall no complaints so far from what i'm aware about how things work there currently.