Why Use a Custom Domain for Ad Tracking

This article explains the importance of using a custom domain for accurate ad tracking when integrating Meta Pixel, Google Ads, or LinkedIn Insight Tag with Scanova QR Codes.

Introduction

When using ad tracking integrations with your QR Codes, the choice of domain has a direct impact on how cookies are stored and audiences are tracked across platforms like Meta, Google, and LinkedIn. This is especially important for brands and agencies managing multiple campaigns or clients.

By default, Scanova uses a shared root domain (scnv.io) for all QR Codes. While convenient, this setup can cause tracking overlaps and inaccurate attribution across accounts.

A. Issues with shared root domains

All dynamic QR Codes created in Scanova use the common domain scnv.io by default. If multiple users enable tracking integrations using this shared domain, it can lead to:

• Shared tracking cookies between unrelated QR Codes

• Cross-user audience overlap in ad platforms (e.g., Meta or Google may group scans from different users into the same audience)

• Retargeting leakage across different campaigns, brands, or clients

• Incorrect attribution of scans to the wrong ad account or audience

This is particularly problematic for businesses handling campaigns for multiple clients or brands with unique tracking requirements.

B. Use custom domains for better tracking accuracy

To avoid cross-user tracking and ensure reliable campaign data, it is recommended to use a unique custom domain for each:

• Brand

• Client

• Campaign

For example:

• qr.brand1.com for Brand 1’s campaigns

• track.clientxyz.io for Client XYZ’s QR Codes

• event.brand2.co for a specific brand event

With a custom domain:

• Cookies are scoped to your domain only

• Ad tracking integrations work in isolation without overlap

• Retargeting audiences are accurate and limited to your scans

• You maintain full control over how scan data is collected and attributed

To learn how to set up a custom domain in Scanova, see: Setup Custom Domain

Footnote

If you still have questions about ad tracking or custom domain setup, feel free to contact our support team at support@scanova.io.