The most secure way to limit particular users to given content

[mnazarov]

@Mikolaj

However I wonder how secure is this? If this was an app deployed on regular Shiny Server I could simply enter JavaScript console and do something like

Shiny.setInputValue('variableSelector', 'Option D')

And this will work even if I’m logged as user from Group 1. However this seems to be harder when using ShinyProxy. Is such solution sufficient in the ShinyProxy context?

I believe the same ‘trick’ would work with ShinyProxy, as it is not shinyserver-specific, but shiny-specific.
A way to restrict such behaviour (note that this applies to virtually any web app not limited to shiny apps) is to have extra checks on the ‘server’ side, i.e. in this case whenever input$variableSelector is being used by further R code.