> ## Documentation Index
> Fetch the complete documentation index at: https://docs.openlayer.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Redact PII

> Redact personally identifiable information from trace data before it is stored

On LLM projects, you can redact personally identifiable information from
[trace](/monitoring/instrument) data **before it is stored**. PII redaction
lives in the **Privacy** section on **Project settings → General**.

This setting is not the same as the [Contains PII](/tests/catalog/contains-p-i-i)
test, which detects PII in your data, or [gateway
guardrails](/gateway/guardrails), which block or redact PII on requests and
responses in real time.

## Turn on PII redaction

PII redaction is available on **LLM projects** only.

1. Open the LLM project.
2. Go to **Settings** → **General**.
3. Find the **Privacy** section: “Control how sensitive data is handled in this
   project.”
4. Turn on **PII redaction**: “Redact personally identifiable information from
   trace data before it is stored.”

When you enable it, Openlayer shows **PII redaction enabled** with “Trace data
will be redacted for the selected entity types.” When you disable it, Openlayer
shows **PII redaction disabled**.

## Choose entity types

With **PII redaction** on, **Entity types to redact** appears. Use the
**Select entity types…** control to choose the entity types to redact. You can
search with **Search entity types…** and select all types at once.

## What gets redacted

Openlayer redacts personally identifiable information from trace data
**before it is stored**, for the entity types you select.

Use this setting when you want stored traces to omit PII. Use the
[Contains PII](/tests/catalog/contains-p-i-i) test when you want to measure
whether PII is present. Use [gateway
guardrails](/gateway/guardrails) when you want to block or redact PII on
traffic before it reaches a provider or a user.