SDK Identity Resolution: turn anonymous users into known users

Our SDK Identity Resolution automatically connects anonymous behaviors with known users, giving you full visibility into the user journey.

Identify anonymous and known users with any of our 16 SDKs
Track users across all of your web and mobile properties
See the full user journey in downstream analytics tools
Send consistent user profiles to marketing, product and customer success
Send the raw event data to your warehouse or data lake

Cross-device tracking built for developers

Let our SDKs do the work
Our SDKs automatically generate anonymous identifiers and associate them with known users when you run our identify method.
Don’t waste any time on integrations work
Whenever new user traits are added through our SDK, we automatically update user profiles in all of the downstream destinations you’ve connected in RudderStack.
Customize trait mappings by destination
Don’t worry if a downstream team changes a field name. With RudderStack you can rename traits on the fly by destination without having to re-instrument events.

Join companies like Magic Eden, Crate & Barrel and Acorns who identify users with RudderStack

"We have three or four data sources, including our iOS and Android apps and back-end servers. The process was straightforward. We took three days to implement the SDK, tested it for a few more days and shipped it the second week."

- Jeremy Zhu
Product Manager at Wynn Slots

Key features

16 SDKs
Robust, flexible user identification method
Track logged-in state
Support for multiple unique identifiers
Customize trait mapping by destination
Out of the box destination integrations

Read the docs

Top SDK Identity Resolution use cases

See the full user journey
Associate previous anonymous behavior with known users, giving you a full view of their journey.
Deliver consistent user profiles to every team
Sending consistent profile updates from our SDK to every destination means that marketing, product and customer success can operate from the same source of truth.
Provide analysts and data science with raw first-party data
By routing events to your warehouse or data lake, you can give your analytics and data science teams access to raw first party data for the entire customer journey.

Get a demo of SDK Identity Resolution

Get started today

Start building smarter customer data pipelines today with RudderStack. Our solutions engineering team is here to help.