# Metrics

:::note[In short]

The SDK reports aggregate, privacy-preserving counters to the license backend. The counters carry no location data: no coordinates, no region ids, no proof contents. Disable them with `OctetConfig.telemetryEnabled = false`.

:::

## What the SDK reports

When `telemetryEnabled` is on (the default), the SDK reports counters to `{activationServerUrl}/v1/metrics`, indexed by your license: how many proofs were generated, uploaded, or could not be produced, by coarse level and region type. The counters are buffered in an encrypted file in the app's private storage and uploaded at most once a day, plus a best-effort flush when the app enters the background.

The counters carry **no location data**. No coordinates, no region ids, no proof contents leave the device in a metrics report.

## What is and is not collected

| Sent | Not sent |
|---|---|
| Counts of proofs generated / uploaded / not produced, by coarse level and region type | Coordinates, region ids, or proof contents |
| SDK version, platform, OS version, app id | Any identifier that resolves to a person |
| A pseudonymous `deviceKey` (a one-way HMAC of the install UUID) | The install UUID itself |

## Turning it off

Set `OctetConfig.telemetryEnabled = false`. That disables the metrics upload and deletes any buffered report.

## Where to go next

- [License & Activation](/docs/concepts/license-activation/): how the SDK reaches the backend.