Retailers have plenty of mobile tech in their arsenal to beef up their approach toward an improved customer experience. But they might want to rethink how they approach deploying it.

According to an article from ShopSmart, the magazine published by Consumer Reports, some of that tech could border on creepy, at least in the eyes of the consumer. (And what other eyes matter when you're selling something?)

Smartphone tracking, personalized advertising and return rewards all made the list for the tech that just might teeter too closely on the boundaries of privacy.

The article notes Cisco is testing a system at an undislcosed store. The system automatically detects a mobile device and connects it to an instore Wi-Fi network which in turn detects searches for lower prices at other merchants. Checking for lower prices can then prompt a price match or upsell message.

Possibly creepy, but will consumers care if it means lower prices? 

Read more about mobile marketing.