May I know if JotForm has the following features?

I currently use JotForms at my business. I am looking to expand our usage but I would need some functionality I have not seen before.

1) Can a set up a cross reference table such that when a customer who is completing the form inputs a part number, it pulls up a description from the cross reference table to help them confirm they typed in the correct number?

2) Can I set up a cache feature such that when a customer inputs their account number, contact name, and email once, the next time they input their account # the additional info (contact name and email) is auto-populated?

3) Do JotForms have a signature box feature that a customer can sign by finger on a tablet or mobile phone?

1) The closest feature we have is the Spreadsheet to Form widget which allows to pull data from a spreadsheet document by entering an unique ID on the form. Please kindly find more details about this feature here: https://www.jotform.com/help/442-How-to-Use-the-Spreadsheet-to-Form-Widget 

2) Unfortunately, there is not a feature that behave exactly like that, we do have some features that will save the data until the user submits the form, here are some links with the steps for each workaround: 

- Autofill which saves the data in the browser's cache: https://www.jotform.com/help/227-How-to-Enable-Auto-Fill-on-Forms 

- Save and continue later which saves the data in the JotForm servers: https://www.jotform.com/help/97-How-to-Save-Forms-and-Continue-Later 

If your purpose is to allow the users to save some data and use this for the next submission, you may create a pre-populated form URL and give this to your users, they can use this link to submit the form every time and keep the data saved. 

Here's a guide that explains the steps to pass the data from one form to another; however, the steps are the same to create a pre-populated URL for the same form: https://www.jotform.com/help/351-How-to-Automatically-Pass-Form-Data-to-Another-Form 

3) We do have different signature widgets, they currently work on mobile, please find more details here: https://www.jotform.com/help/433-How-to-Add-an-E-Signature-to-Your-Form 

If you have questions, let us know.