Good morning, @LostinIndiana.

I'm going to submit feedback on my end to our Product Development Team about bringing in a feature that will allow signatures on Checks in QuickBooks Online. You can visit our Blog to see what's new in QuickBooks Online, as well as seeing what's coming to the platform.

If you have additional questions or concerns, please don't hesitate and reach back out to me! Wishing you and your company health and safety.