Comcast could be wifi champion

Just when you thought Comcast couldn't possibly get any larger, the company now plans to install gateway devices in people's homes that can act as wifi devices. It could be a boon for Comcast as people are starting to get more savvy about using free wifi to go online with their smartphones rather than paying for the internet use from their cellphone providers. It hopes to get 70 percent to 80 percent of its subscribers accessing the internet through wifi. Comcast and other companies hope to build…