---
id: "changelog/tracking-v2"
type: "changelog"
url: "https://affitor.com/changelog/tracking-v2"
updated: "2026-03-17"
---
# Rebuilt tracking and SDK 2.0

> Partner links use ?aff=, clicks, leads and sales are recorded as separate events tied by a click ID, and the SDK adds signup().

Tracking is rebuilt from the ground up. Partner links now carry `?aff=` instead of `?ref=`. Clicks, leads and sales are recorded as separate events, tied together by a `click_id`, so every sale can be traced back to the click that started it.

SDK 2.0 adds `signup(userId, email)`. It waits for the script to load, so the signup is never lost, and replaces `trackLead()`, which stays as a deprecated alias.

```js
await affitor.signup(user.id, user.email);
```

The setup page now shows events live as they arrive, so you can watch your integration work. [Read how attribution works](/docs/api-reference/attribution)