"On Monday night, Google released extensive guidelines for software developers who want to build apps for Glass. With those guidelines, it is taking a page from Apple’s playbook, by being much more restrictive about the glasses than it has been with other products, particularly its Android operating system for phones, and controlling the type of apps that developers build.”
"To begin, developers cannot sell ads in apps, collect user data for ads, share data with ad companies or distribute apps elsewhere. They cannot charge people to buy apps or virtual goods or services within them."
"Some developers said they were disappointed by the limits."
"Other developers said it made sense for Google to be more cautious than it was with mobile phones because Glass was always in a user’s field of vision.
“You don’t carry your laptop in the bathroom, but with Glass, you’re wearing it,” said Chad Sahlhoff, a freelance software developer in San Francisco. “That’s a funny issue we haven’t dealt with as software developers.”
Mr. Sahlhoff said he wanted to build apps for carpenters so they could see schematics without lifting their eyes from machines, and for drivers to see the speed limit and points of interest without taking their eyes off the road.”
"In addition to restricting advertising in apps, Google is also limiting the amount of access app software has to the devices. The apps, which will be called Glassware, will be cloud-based, like Web apps, as opposed to living on the device like cellphone apps. Developers will not be able to change the display or access the sensors on the device."