Respectfully Bruce, no you don't get it. We've been politely hinting that feature creep can be danger for a mobile computing device, but that didn't work so I will try again with your use scenario

It is an Internet Tablet - portable, optimized for viewing web pages, and always connected. So the idea that you would use a camera to capture and store an image of a train schedule is the very anti-thesis of what this device is about. What you are supposed to do is link to the website that includes the train schedule, maybe bookmark the page using less than 1/1000th the memory of an image file. In other words, you don't add imaging hardware, sensors or gobs of memory just to capture and locally store what is already on the Net. Do you get it now??

"I don't know how to do it, but that's for you guys to figure out", but in the real world everything does add size and weight, decreases battery life and involves compromise of some sort. A good product can never emerge if bad choices are made when setting specs.