I use iPad for invoicing deliveries. Law requires signature, but this functionality is gone in the latest update. Customers used to be able to sign with their finger?

I'm here to share some information about adding signatures to invoices, @milemarkerzero-t. 

Yes, your customers can add their signatures to the invoices while using the QuickBooks Online app with the old experience. This feature is no longer available with the new experience. Check out this article for more information about adding signatures to invoices and estimates: Capture signatures using the QuickBooks Online app. 

It'll be great to include this feature in the newest update for invoices, so I'll take note of it. I also encourage you to leave feedback from within the account. 

Here are the steps:

1. Go to the Gear icon and select Feedback.
2. Provide your product suggestion.
3. Click on Next to submit feedback.

You can check out this article for more information about providing feedback to make the program better: How do I submit feedback?. To check the latest updates that we have with estimates and invoices, refer to this article: See what’s new with estimates and invoices in QuickBooks Online.

In the meantime, you can check for a third-party app that works well with QuickBooks that can add signatures to your invoices. Refer to this link to find the right apps for your business: QuickBooks Apps.

For more information on how to look at the status of your invoices in the QuickBooks Online mobile app, see this article: Track the status of invoices in the QuickBooks Online mobile app. 

I'm always here if you have further questions about invoices. Keep safe, and have a wonderful day!

@milemarkerzero-t 

Consider having a 3rd party app as a workaround to integrate with QBO or switch to another accounting app with that feature.