The school asked me to write a critical letter and then asked my parents to sign it. It's far from home, so you need an electronic signature. I want to know how to do it. He said to take pictures with his mobile phone. Just ask your parents to write a copy as you wrote, sign your name, take a photo and send it to you.

You'd better talk to the teacher. Don't write if you can't write. If you can't, do it.