From pixel to server: tracking that holds
3 published · 3 more to come
Since June 2026 a BigQuery Data Transfer Service backfill can overwrite complete history with empty results, and the Google Signals setting governs less than it once did.
Blog
Article series
Articles that build on each other, in reading order.
Wiring consent correctly
4 published
- Google Consent Mode v2: Implementation via GTM and Vanilla JS
- Basic vs. Advanced Consent Mode: The Architecture of Pings
- GA4 Consent Mode v2: Decoding the gcd Parameter (A Network Request Deep Dive)
- Privacy Architecture: How to Pass Consent State from Client GTM to Server-Side GTM (Usercentrics, Meta Pixel & CAPI)
Homelab on the Raspberry Pi
2 published · 6 more to come
Video surveillance on your own hardware
1 published · 3 more to come
Two June Analytics Changes That Arrive Without an Error Message
2026-08-12
(No comments yet)
37 Months and Out: Google Ads Data Now Expires on a Schedule
2026-08-12
(No comments yet)
Google Ads now deletes performance data after 37 months, and the line moves daily; here is the arithmetic, a resumable backfill job, and the numbers people are wrongly quoting.
First-Party Cookie Restoration: Surviving ITP with Cloudflare Workers and ssGTM
2026-08-12
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An architectural guide on overcoming Safari ITP 7-day cookie caps using true first-party edge routing, server-managed cookies, and Google Tag Gateway.
Server-Side GTM Data Enrichment: Real-Time CRM Lookups via Firestore and BigQuery
2026-08-11
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How to enrich incoming analytics hits in Server-Side GTM with CRM attributes via Google Cloud Firestore without exposing PII in the browser.
Google Ads API Passkeys: Your OAuth Client Is Fine, Your Login Is Not
2026-08-11
(No comments yet)
The passkey requirement that started rolling out on 5 August applies to the user account behind your authorization, not to the OAuth client, and service accounts are exempt.
Amazon Ads Refresh Tokens: 365-Day Expiry Since July 30, No Reminder
2026-08-11
(No comments yet)
Amazon Ads refresh tokens issued since 30 July 2026 die 365 days after advertiser consent, using them changes nothing, and no reminder is sent.
Three Analytics Deadlines in August 2026: BigQuery, Adobe, Shopify
2026-08-11
(No comments yet)
Between 11 and 26 August 2026 three deadlines take effect: a BigQuery billing label change, the Adobe Analytics API 1.4 end of life, and the Shopify checkout migration for shops without Plus.
The Evolution of Web Tracking: From Log Files to the Server-Side Future
2026-08-10
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The landscape of digital analytics has undergone a radical transformation over the past three decades. What began as a highly technical, infrastructure-heavy process has evolved into a sophisticated discipline balancing data accuracy with stringent privacy regulations. The trajectory of web tracking reveals a clear pattern: a shift from raw server data to client-side cookies, and […]
Meta Marketing API v26.0: October 27 Breaks Your Version Pin
2026-08-10
(No comments yet)
On October 27, 2026 the core Graph API v26.0 changes hit every supported version at once, so pinning is no mitigation; here is an audit script that finds your exposure.
GA4 Consent Mode v2: Decoding the gcd Parameter (A Network Request Deep Dive)
2026-08-10
(No comments yet)
A technical breakdown of the GA4 gcd parameter bit-logic, server-side debugging in ssGTM, and identifying CMP race conditions.
ALL ARTICLES & CATEGORIES
CCTV
Follow this category by RSSData Privacy
- Protecting Digital Privacy: How Anonymous Emails Work
- Demystifying TCF: The Universal Language of Cookie Consent
- Tutorial: Configuring Geolocation Rules in Usercentrics
- Privacy by Design: Deep Dive into ads_data_redaction in Consent Mode v2
Digital Analytics
- Two June Analytics Changes That Arrive Without an Error Message
- Three Analytics Deadlines in August 2026: BigQuery, Adobe, Shopify
- The Evolution of Web Tracking: From Log Files to the Server-Side Future
- GA4 Consent Mode v2: Decoding the gcd Parameter (A Network Request Deep Dive)
- Accelerating GA4 Conversion Accuracy: A Step-by-Step Guide
- GA4 & Server-Side GTM: The “Migrate from JavaScript Managed Client ID” Feature Explained
- Tutorial: Server-Side IP Anonymization: GA4, Adobe Launch, and Jentis
- Tutorial: Implementing Custom Dimensions in Matomo
- Tutorial: Advanced Implementation of Google Consent Mode v2 via Google Tag Manager
- The New Google Tag Manager Interface: The Era of the Unified Google Tag
- Implementing Google Tag Gateway: A Complete Guide
- Basic vs. Advanced Consent Mode: The Architecture of Pings
- Google Consent Mode v2: Implementation via GTM and Vanilla JS
- Mastering GA4 Cross-Channel Conversions and Budget Allocation
Digital Marketing
- 37 Months and Out: Google Ads Data Now Expires on a Schedule
- First-Party Cookie Restoration: Surviving ITP with Cloudflare Workers and ssGTM
- Server-Side GTM Data Enrichment: Real-Time CRM Lookups via Firestore and BigQuery
- Google Ads API Passkeys: Your OAuth Client Is Fine, Your Login Is Not
- Amazon Ads Refresh Tokens: 365-Day Expiry Since July 30, No Reminder
- Meta Marketing API v26.0: October 27 Breaks Your Version Pin
- Microsoft Advertising Conversions API: Server-Side UET in Practice
- The Evolution of Tag Management Systems: From Hardcoded Chaos to Server-Side Mastery
- Microsoft Ads Consent Mode: A Complete Guide to Implementation and Differences
- Tutorial: IP Anonymization in Conversions API: Meta, LinkedIn, and TikTok
- Tutorial: Implementing Google Ads Enhanced Conversions
- The Evolution of Search: Why SEO is Transitioning into GEO (Generative Engine Optimization)
- Vertex AI in E-commerce: The Ultimate Recommendation Engine
- Privacy Architecture: How to Pass Consent State from Client GTM to Server-Side GTM (Usercentrics, Meta Pixel & CAPI)
IT & Networks
- Mastering Geo-Location Testing: How to View a Website from Anywhere in the World
- Ultimate Multi-WAN Failover Guide with Ubiquiti UniFi UCG-Fiber
- Extracting Specific Tables from Massive SQL Dumps using PHP
- How to Set Up Rclone with Google Drive on a Headless Server (The Right Way)
- Tutorial: Managing Disk Space: Finding Largest Files via SSH on Ubuntu/Debian
- Mastering the UniFi Zone Matrix: Visual Firewall for Smart Homes and Servers
- Bulletproof Your Data: Automated Raspberry Pi Backups to Ubiquiti UNAS Pro
- Tuya Smart Home – Breaking Free from the Cloud: Migrating Tuya Devices to Home Assistant (Local Control)
- Public Servers in a private UniFi LAN: A Network Separation Guide
Raspberry PI
- Supercharge Your Raspberry Pi 4 & 5: How to Boot from an SSD
- Uninterruptible Power Supply (UPS) for Raspberry Pi 4 and 5: Top 5 Solutions for High-Load Setups
Smart Home
- Integrating the Fronius Symo Inverter with Smart Home Systems
- Smart Home in the Garden: The Ultimate Robotic Lawnmower Battle
- Smart Home and AI: The Revolution in Automation and CCTV Monitoring
- Architecting Smart Home Lighting: Circuit Isolation and Outdoor Weatherproofing
Web Development
Follow this category by RSSWordpress Hacks
- Securing WordPress Logins: Introducing WP Admin Captcha
- Top 3 best WordPress Gallery Plugins: A Comparison and Review
- Speed Up Your WordPress Site with Lite Page Cache
About my Blog (LukasWojcik.com): Technology, Analytics, and Digital Security
This platform is dedicated to exploring the complex intersection of modern technology, Data Analytics, and Digital Privacy. In an era where data structures drive critical decisions, understanding the technical nuances of web analytics, tracking methodologies, and strict compliance frameworks—such as GDPR and Consent Mode v2—is absolutely essential. The articles published here provide in-depth, technical analyses of data collection mechanisms, privacy-first architectures, and industry best practices for maintaining absolute data security in a digital-first environment.
Beyond the digital landscape, the content deeply delves into the physical realm of home automation and physical security. Comprehensive guides and technical reviews cover the latest advancements in Smart Home ecosystems, intelligent climate control, automation protocols, and advanced CCTV surveillance systems. From configuring local network security and firewalls to integrating IP cameras and IoT (Internet of Things) devices seamlessly, the primary focus remains on engineering efficient, highly secure, and future-proof technological environments.
Whether the objective is researching the technical implications of the latest ePrivacy regulations, architecting local automation routines, or optimizing robust data analytics frameworks, this website serves as a comprehensive, well-researched resource for technology professionals, developers, and security enthusiasts.