Compared to Case Study $2$ where the eye$-$tracking technology was used in an online platform, what might be different in the context of Case Study $3?$

The perceived ease of using the technology might be lower in Case Study $3$ compared to Case Study $2.$

All of the above.

If consumers are aware that they are part of a study, their behavior might change $($e$.$g$.,$ change in behavior to help the researcher attain their research objectives.$)$

There might be an increased social bias in the behavior due to the feeling of "being watched" in the physical store environment in Case Study $3.$