---
title: "QB Signatures FAQ"
slug: "signatures-for-quickbase-faq"
updated: 2026-10-10T13:34:56Z
published: 2026-10-10T13:34:56Z
canonical: "help.quickbase.com/signatures-for-quickbase-faq"
---

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

# QB Signatures FAQ

These questions, and many more, are also answered in [QB Signatures messages and troubleshooting](https://help.quickbase.com/quickbase-extensions/docs/en/qb-signatures-messages#faq), together with every message QB Signatures shows.

## FAQ

- [Is this a legally binding electronic signature?](/quickbase-extensions/docs/signatures-for-quickbase-faq#is-this-a-legally-binding-electronic-signature)
- [How do I include a signature image on an Exact Forms Plus template when the signature may not exist yet?](/quickbase-extensions/docs/signatures-for-quickbase-faq#how-include-a-signature-image-on-an-exact-forms-plus-template-that-may-or-may-not-exist)
- [Can this be used on a phone or tablet?](/quickbase-extensions/docs/signatures-for-quickbase-faq#can-this-be-used-in-the-quickbase-mobile-app1)

## Answers

### Is this a legally binding electronic signature?

No. QB Signatures captures an image of a signature and records when it was saved, but it doesn't verify the signer's identity, keep a tamper-evident audit trail, or produce a signing certificate. For agreements that need a legally binding electronic signature, consider [JuicedSign](https://help.quickbase.com/quickbase-extensions/docs/en/overview-1) or DocuSign for Quickbase, and check with your legal team about your requirements.

### How do I include a signature image on an Exact Forms Plus template when the signature may not exist yet?

You can place a signature on an Exact Forms Plus document with the image syntax *~i:{field ID}:{size in pixels}~*—for example, *~i:12:200~*. (See [Include images in documents](https://help.quickbase.com/quickbase-extensions/docs/en/efp-images) for more about images in Exact Forms Plus.)

If the record hasn't been signed yet and you want a blank space instead, put the image syntax in a formula text field that only outputs it when the signature exists. For example, create a **Formula - Text** field that checks the signature file attachment field:

```
If(ToText([Signature File]) <> "", "~i:12:200~", "")
```

> [!NOTE]
> Note
> 
> Place the new formula field's field ID on the document template, and include it in the *clist* on the Document Templates table. Include the file attachment field that holds the signature image in the *clist* as well, with the formula field's ID before the image field's ID. So if the formula field is 23 and the image field is 12, the *clist* should contain *##.##.23.12.##.##*.

### Can this be used on a phone or tablet?

Yes. Use the **Sign Off (Mobile)** button that the setup wizard adds. It opens the signing window in a new browser window instead of a pop-up, and returns the signer to the record a few seconds after the signature is saved. It also works when your account uses Quickbase enhanced security: the installation wizard creates it so it sends a temporary token. See [On a phone or tablet](https://help.quickbase.com/quickbase-extensions/docs/en/signatures-for-quickbase-features-and-functionality#mobile).