---
lang: en
title: 'API docs: security.permission._securityid_'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.security.permission._securityid_.html
---

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[Home](./index.md) &gt; [@loopback/security](./security.md) &gt; [Permission](./security.permission.md) &gt; [\[securityId\]](./security.permission._securityid_.md)

## Permission.\[securityId\] property

<b>Signature:</b>

```typescript
readonly [securityId]: string;
```

