> For the complete documentation index, see [llms.txt](https://help.besmart.software/t4r/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.besmart.software/t4r/features/list-of-features/bimsign.md).
# BIMSign
**Icon:**
**Location:** ribbon Be.Smart T4R, panel Project
**Packages:** Be.Smart T4R
{% hint style="info" %}
### Main functionalities and benefits:
* Allows you to prove ownership of the BIM-document
* Solves the need to provide a certain level of security for your BIM-content
{% endhint %}
### **Overview**
The function BIM Sign watermarks your BIM document (a RVT project, RFA family or template .RTE/.RFT) with a permanent invisible signature. At any moment, you can then read this signature from the document and prove ownership (intellectual property, IP) of the given document. The signature reading functionality is active even without the Holixa T4R license, e.g. after its Trial version expires.
BIMsign does not prove an unmodified state of the original document (like digital signature does), it proves that a document is based on your original data. Non-authorized users cannot remove the BIM signature. The signature remains part of the BIM file even if the BIMsign utility is not installed on a Revit workstation.
### **1. Main screen**
Document status signed/not signed
### 2. Signing a document (password is not set yet)
### 3. Setting/changing password
### 4. Signing a document
### 5. Document is signed
### 6. Deleting Sign
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