i know there are a few topics already stating this can't be done but I've stumbled across this https://github.com/szimek/signature_pad   check out the demo seems to be clean...

and i was thinking to run the .js and .css on our own server and embedding it as an iframe then getting a cal back function to add the image url to the record or use that url t upload it straight to zoho?  i know this is slow but i can't think of any other way soho creator will let it work

Possible or waste of time? 

Anyone else have any success with anything like this using other systems?