> For the complete documentation index, see [llms.txt](https://gsfcorp.gitbook.io/eca/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gsfcorp.gitbook.io/eca/user-manual/security-keys.md). # Security Keys Security Keys is required for gaining authenticated access to **ecaOS Dashboard**. There are **two** types of Security Keys: * USB Security Key * Virtual Key (Virtual Access Code) ## USB Security Key Security Key is uniquely designed USB key which is paired to the ECA. It can only be used with the paired ECA. If the key is lost, new key can be issued by GSF and the paired ECA will automatically reject the usage of the lost key, should they be recovered later.
## Virtual Key Virtual Access Code is used for gaining authenticated access to ecaOS Dashboard without requiring the use of security key. Authenticator app, such as **Google Authenticator** is required to install on your phone or tablet device such as phone. ### When to use Virtual Access code? 1. Accessing ecaOS Dashboard without possesion of Security Key 2. Accessing ecaOS Dashboard remotely from another computer