[iuygtfrgth]

A couple of years ago they announced something similar with GPS. On the same day two bits of government made announcements.

1, A massive funding for improved GPS security to prevent terrorists causing chaos by them blocking GPS signals.

2, An increase in the powers of everybody from the port authority to the girl guides to have a kill switch to shut down GPS if there was a threat of a terrorist attack.

[icefox]

Finally I have a justification for making an android application that will tell you where you are based upon photographing the stars.

[iuygtfrgth]

Useful when you absolutely definitely need to be there on time - and the other side has just destroyed your GPS satellites

http://books.google.ca/books?id=QymEXZIWEe8C&pg=PA332&#3...

[ecyrb]

Might find this useful: http://astrometry.net/