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Everything flows through the gate.

Most tracking platforms are a bag of features around a stream. HeySignal is a set of features around a decision: is this event allowed to exist here? Every capability below either feeds that decision, enforces it, or makes the answer useful.

Events are captured by our SDK or your existing GTM setup, signed together with the visitor's consent state, verified at a European edge, shaped by your rules, delivered to every permitted platform, and accounted for down to the block reason. Here is each piece.

The consent gate Every event carries an HMAC-SHA256 signature over its data, its consent state, and its timestamp. The edge verifies it with a constant-time comparison and a five-minute replay window, and refuses anything that fails with a 403 and a typed reason. Consent categories then gate each destination individually. HOW THE GATE WORKS → Destinations & consent translation Ten destination types out of the box. One verified event fans out to all of them, deduplicated three ways, with consent translated into each platform's own dialect automatically. Circuit breakers and a dead-letter queue keep a flaky platform from becoming your problem. SEE THE DESTINATIONS → Consent Gap analytics The only tracking platform that tells you what declining costs you. Denied sessions are stripped of every identifier at the edge, then aggregated with differential privacy and k-anonymity into revenue-gap numbers per destination. Argue about consent UX with data you can show a DPO. MEASURE THE GAP → First-party GTM proxy Keep GTM and GA4 exactly as they are. HeySignal serves the container from your own subdomain, strips every Google tracking domain from it server-side, computes Consent Mode v2 signals from your CMP's cookie at the edge, and honors Global Privacy Control. KEEP YOUR GTM → EU-only infrastructure Bunny.net edge across European points of presence, OVHcloud Postgres and Valkey in France and Frankfurt. No US entity in the chain and nothing for the Cloud Act to reach. This is the difference between "EU region" and European infrastructure. READ THE SOVEREIGNTY STORY → Ecommerce presets & migration One-click presets for Shopify, WooCommerce, and GTM GA4 dataLayers that install real, editable rules. Discovery mode shows you the shape of your dataLayer before you map anything. Shadow mode proves client-id parity before you switch anything off. MOVE WITHOUT BREAKING THINGS →

Also in the box

No dedicated page. Still sharp.

No-code tracking rules

Click, form, page-view, scroll, visibility and dataLayer triggers, each declaring its own consent category. Built in a visual point-and-click inspector on your live site.

Live debugger

A real-time stream of every event through six pipeline stages, with payload inspection (PII redacted), per-destination status codes, and replay with drift comparison.

Data-flow view

Your whole setup as a living graph: snippet to gateway to destinations, consent gates included.

API-first

Everything the dashboard does, a REST API does too. Sites, destinations, analytics, webhooks: all provisionable in code.

Pick a feature. Pull the thread.

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