QR Code

A QR code (Quick Response code) is a two-dimensional barcode that encodes data — typically a URL — readable by smartphone cameras without a dedicated scanner app. Originally developed in 1994 by Denso Wave for automotive manufacturing, QR codes became consumer infrastructure during the 2020–2021 COVID surge as restaurants and retailers replaced physical menus and printed information with scannable links.

Common ecommerce use cases

• Packaging and product inserts: linking from physical products to setup guides, registration pages, loyalty signup, or post-purchase content.
• Print-to-digital advertising: direct mail, magazine ads, billboards, and out-of-home placements that link to landing pages.
• In-store signage: linking shelf signs or window displays to product detail pages, lookbooks, or store-specific promotions.
• Point-of-sale and payment: contactless payment via QR-based wallets (Alipay, WeChat Pay in some markets); receipt delivery to email or app.
• Authentication and traceability: linking premium products to authenticity verification, supply-chain provenance, or warranty registration.
• Event and pop-up activations: capturing leads, distributing samples digitally, or linking to limited-edition product drops.

What works vs. what doesn't

QR codes are best for clear value-on-scan situations: a printed coupon worth scanning, a setup guide the customer needs, a payment they're trying to make. Codes deployed without obvious payoff tend to be ignored — "scan QR for more info" without specifying what info typically produces single-digit scan rates.

Practical considerations: codes need adequate contrast and size (typically 0.8–1 inch minimum for printed materials), should always specify what the customer gets by scanning, and benefit from short trackable URLs to measure engagement and lift performance over time.

Tracking and attribution

QR codes use standard URLs, so any redirect or UTM-tagged link works. Most ecommerce brands run QR codes through their existing link-shortening or attribution infrastructure (Bitly, branded short domains, or marketing-platform-managed redirects). Per-placement tracking surfaces which codes are actually generating engagement.