# Reach

The number of distinct people, households or devices estimated to have received an exposure during a period.

The number of distinct people, households or devices estimated to have received an exposure during a period.

## An example

A report estimates 8,000 distinct devices reached by a campaign in one week.

## Why it matters

Name the identity unit and estimation method. Device reach is not necessarily unique-person reach.


## Related terms
- [Frequency](https://jolts.xyz/resources/glossary/frequency)
- [Gross rating point (GRP)](https://jolts.xyz/resources/glossary/gross-rating-point)
- [Impression](https://jolts.xyz/resources/glossary/impression)

## Next step

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