Harry Wang, director of health and mobile product research at Dallas-based Parks Associates, agreed that some retailers are wary of spending big bucks at this stage because they are uncertain if the return on investment (ROI) will be worth it.

“It is a chicken and egg scenario where retailers want to see the results before committing more budget - but results won't be meaningful if only doing it in small scale so the learning curve will be steep,” Wang said. “We are not over that experimental hump yet.”

From the article "Retailers are using technology to make the shopping experience more convenient and personalized." by Mary Ann Azevedo.