If you have strawberry perl installed, you may get one of these errors when you try to use pip from powershell:
Did not provide a command
Unknown or unsupported command 'install'
This is the result of a conflict between strawberry perl's pip and python's pip. You need to remove anything related to strawberry perl from your path environmental variable and ensure you have C:\Python27\Scripts and C:\Python27\Scripts in your environmental variables.
I was planning to use "Trusted Authentication" to share an embedded chart with lots of users (not all of whom have licenses). Some of those users will only look at the chart maybe once a year, and we can't justify buying them an entire license to look at a chart once.