Years ago I user a good blue Ball pen and signed in a blank paper. I scanned this in high resolution, cropped, fattened the lines, removed background and saved

Years ago I user a good blue Ball pen and signed in a blank paper. I scanned this in high resolution, cropped, fattened the lines, removed background and saved it as a transparent PNG. I added this PNG as a stamp to my favourite PDF software and have signed many many documents. The thing to remember is to flatten comments after I stamped my signature onto the document.