Thanks for the feedback Sir 😊.
I did a quick search on Hashnode community but couldn't find any article on "Online Signatures"
But I found this on Google 👇
docsketch.com/online-signature
I don't know if that's what you wanted?
If you would like someone to write an in-depth article on it, try to explain more about the "Online Signature" you want and make a request at https://hashnode.com/rfa on hashnode