Austria Solar powering their annual report

A company willing to walk the talk!  Solar powering their annual report.  A tip of the hat to Austria Solar for leading by example.

[youtube http://www.youtube.com/watch?v=vATSkM6Qf6Y&w=640&h=360]

Or is this a new form of invisible ink?  How would Tom Clancy, et. al., employ this technology in their novels?