Seems like it.
You can pass in the username like you did before with the cmd switch?
I have never used an .mdw file and when I wanted to restrict users, I used a table as Ranman256 suggests. However that linked way seems to copy what you did before?
However, it would not be difficult for someone to copy the shortcut properties and be able to open the db as aeroclub?
If you are going to have a user table, then you will also need a password for that user?, else I could just say I am aeroclub ?
Very easy to change username for environ as well.
Open a command window and type set and press enter
What is USERNAME
Then key in 'set USERNAME=aeroclub' (without the quotes) and press enter. Now key in set and press enter again.
Now what is the USERNAME ?