How to share an erpnext link to an external person by using a secured way
What do you mean by secured way? And what link are you talking about?
Is it like sharing a link to a doctype URL with a person who doesn’t have any login credentials? (Guest user?)
The secured way which I mean that, without login credentials, and also by providing a masking to view the link as same as the concept of there is a need of password to view the bank statement of our account.