Digital radio platforms estimate Unique Listeners using technical information generated when devices connect to streaming services.
Depending on the platform and player, this may include:
- Listener IDs
- Device identifiers
- Platform information
- IP addresses
- Session behaviour
Reporting systems analyse this information to estimate how many distinct listeners accessed a stream during a reporting period.
Modern apps and web players often provide more consistent listener identification through technologies such as anonymous listener IDs, helping reduce duplicate counting and improve long-term reporting consistency.
However, streaming systems cannot directly identify individual people or “human ears”. One listener may appear multiple times across devices or networks, while shared listening environments may cause multiple listeners to appear as a single session.
For this reason, Unique Listener figures should generally be interpreted as estimates rather than exact audience counts.
For more information, see: Why Unique Listeners Are an Estimate, Not an Exact Audience Count Understanding Digital Radio Metrics