Make field read only

Forms
1

HI
We want to make the signature field read-only once it's filled in and the form is saved.
best regards

2

Dear @achat,
You can make Ink Sketch control read-only on Edit/Display forms with the property in editor - Ink Sketch control — SharePoint forms

If you want to make the control disabled dynamically, you can also use JavaScript to disable it - Ink Sketch control — SharePoint forms