title: Starting Shiny app after password input
body: <p>I know that in Shiny Server Pro there is a function of password control.
  The question is that Shiny has function passwordInput(), which is like textInput()
  Has anybody thought about how to do the following:</p>
  
  <p>1) Launching the application only after correct password input
  2) Launching the part of application after correct password input (for example, I have some tabs in shinydashboard, and I want to make an acces to one of them only by password)</p>
  
  <p>Thanks!</p>