There aren’t many people out there anymore who don’t have a cell phone. So wireless companies are looking to expand their networks to one day connect to a whole host of new devices: from cameras and games (like the Nintendo DS) to automobiles and GPS devices. The big focus so far has been on e-readers, like the Kindle. This week, Verizon said it will become the wireless carrier for a rival e-reader from iRex Technologies (part of the electronics giant Royal Philips Electronics). There is one big concern behind this growth: getting consumers to pay for all these communications services. As more and more bits of everyday technology go wireless, people can look forward to some very complex bills.