prompt user for a password during vi execution

[pcs82]

Hi,

I have a  test automation application which has a security requirement. when the application runs, if any operator tries to modify any input parameters, the application should ask for a username and password and should accept the modification only if this person is authorised to do it.system should allow to add users/change passwords by a master user.

 how can this be done in labview 8.6? 

Regards.

[NeilR]

What you're proposing is fairly complex. Possibly a better solution is to have the controls that you require to be protected, disabled by default when the application runs. Have a login button that triggers a dialog box and verifies a user/password which in turn enables the controls.

[GerdW · Accepted solution]

Hi pcs,

- use the event structure to register for value changes of any controls.

- create a (sub)VI that asks for username and password.

- create a (sub)VI that compares given credentials with a database.

- create a (sub)VI that allows for editing that database.

- I would suggest atleast 3 operator levels: "generic, no passowrd", "operator", "admin". Admin is allowed to change the user database…

[pcs82]

I ve implemented this model in a scaled down version. Thanks!!