Also, users can create a signature even when the device is disconnected from the internet. Moreover, it lets you sign using your fingers or using a stylus. As its name implies, users can easily sign to any document using a mobile device. How to Insert Signature in Word? SignEasy
On that note, here are two solutions to insert signature in Word.
In this case, you need an authorization letter with your signature attached giving permission to your brother to receive that document on your behalf. For example, you need to get a personal document from a government agency, but you ask your brother to get it for you. A signature is a mark written by a person on a legal document to signify their consent and approval of the details written therein.