Paired with a store locator, Virtual Try-On can have a positive impact on your traffic instore.
The best way to measure it is by running an A/B test on a website page as it gives insights on the conversion rate of a specific feature. You will then know to what extend the version A of a page (with virtual try-on) is generating more actions (i.e the use of a store locator) than the version B of the same page (without virtual try-on).
To know more about the impact of the virtual try-on on the conversion rate for drive-to-store, check out the case study about Fielmann A/B testing