Under the Federal Communications Commission's requirement, cable operators must either switch to all-digital systems, or carry both the digital and analog signals of local stations in the first three years after the February 2009 conversion.

WSJ: Cable Must Air Broadcast Signals

Operators that must go through incumbent networks cannot offer all that.

FORBES: A fiber niche is nice

To be sure, all fire codes must be vigorously enforced, and club and concert hall operators must be held to the highest standards.

CNN: We haven't learned from past mistakes

With the method laid out in the new paper, all that is required is the raw data, which must be released by the mobile phone operators.

BBC: Rain tracked with mobile network