# Cross-device tracking

Connecting activity on different devices to the same person or household.

Connecting activity on different devices to the same person or household.

## An example

A measurement system links a phone visit with a later laptop purchase.

## Why it matters

Such links can be uncertain and privacy-sensitive. Do not treat a shared IP address as proof of identity.


## Related terms
- [Attribution](https://jolts.xyz/resources/glossary/attribution)
- [Attribution window](https://jolts.xyz/resources/glossary/attribution-window)
- [Conversion](https://jolts.xyz/resources/glossary/conversion)
- [Conversion tracking](https://jolts.xyz/resources/glossary/conversion-tracking)

## Next step

[Explore advertising](https://jolts.xyz/advertisers) or [monetize your AI app](https://jolts.xyz/publishers).