---
lang: en
title: 'API docs: security.securityid'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/security
permalink: /doc/en/lb4/apidocs.security.securityid.html
---

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[Home](./index.md) &gt; [@loopback/security](./security.md) &gt; [securityId](./security.securityid.md)

## securityId variable

A symbol for stringified id of security related objects

**Signature:**

```typescript
securityId: unique symbol
```