Random glyph variation to mimic handwritten font

Hi

I want to create a font from handwritten characters (not physically connected to each other) and include slight variations of every character to mimic real handwritten imperfections. I know it can be done with OpenType alternates, but this still requires some manual work in Indesign when setting the text (choosing which variation of which character to use). Instead I would like to have the computer pick a variation randomly. Can this be done (on font level, Indesign (scripting) level, other software,...)?

Thanx
F