One of the challenges for local TV stations when it comes to putting their live feed online is making sure the signal doesn't travel beyond their home market.
That's because the deals local TV stations make for much of the programming they carry come with restrictions on where that programming can appear. For example, a station carrying Ellen DeGeneres' show in Boston isn't allowed to put it on a platform on which someone in Philadelphia could watch it, undercutting the local Philly station that also has rights to the show.
A solution to this problem may be Syncbak, a company that CBS said Monday it has made an investment in. Syncbak allows local stations to stream their signal to residents in its markets, but also serves as something of a border patrol for that content.
For example, if someone was on a train from New York to Boston and watching CBS on their iPad or mobile phone, Syncbak would seamlessly switch to whatever local station served the area the train was passing through.