These tips can help retailers to avoid the creep factor
Offer transparency with customers about how you will use the data.
Communicate with customers via the media they choose versus all media. That is key to being helpful, and not creepy.
Comply with the privacy and security laws in all jurisdictions where you operate. Most North American retailers will need to adopt California Consumer Privacy Act of 2018 (CCPA) best practices, for example, and GDPR if they want to sell into Europe.
Source: RIS, "Advanced Personalization: Unlocking the Secret to Shopping Experiences that Create Value."
Interactive fitting room technology in some American Eagle stores allows shoppers to scan items on an iOS-based device.
At a Neiman Marcus store, interactive dressing rooms even let shoppers personalize their lighting.