# Does Julia have an "invisible" function?

**URL:** https://discourse.julialang.org/t/does-julia-have-an-invisible-function/76063
**Category:** New to Julia
**Tags:** r
**Created:** [February 9, 2022, 7:43am UTC](https://discourse.julialang.org/t/does-julia-have-an-invisible-function/76063 "2022-02-09T07:43:45Z")
**Posts on this page:** 1
**Showing post:** 11

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### Author: ![jling](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jling/32/212909_2.png) [@jling](https://discourse.julialang.org/u/jling)
#### Post date: [February 9, 2022, 2:55pm UTC](https://discourse.julialang.org/t/does-julia-have-an-invisible-function/76063/11 "2022-02-09T14:55:46Z")

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> [@jamaas](#):
>
> knitr it to a pdf, which all clients like to study and use. So the invisible password allows them to see how I’ve done it but also prevents the password from being seen in R results. As long as I keep it hidden, then they would have to get access to my server, and my keyring to get the credentials? Let me know if this is still illogical, or you have a better solution.

no it’s not logical, if you’re just giving them a pdf file, how could they possibly know your password unless it’s printed in PDF? As for Julia, as long as you hide the result from whatever notebook you’re using when generating pdf, sharing the code with them is whatever.

you do realize that they need to be on the same computer and same account as you when they run `secret-tool` in order to work right? it’s not reading from the internet, it’s a local command. I don’t understand why `;` is “not good enough”

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