Buy Button on Remote
How about a remote control that has a buy button on it? For those people who buy things off of infermercials. The buy button would transfer all of your information and you wouldn't have to do anything but wait for it in the mail. Now, it can't be as simple as pushing a button because you wouldn't want other people buying things you don't want. To buy something maybe it can bring you to a screen where you would have to enter credit card numbers or passwords. It doesn't only have to be on a remote control. Maybe you can have it on a keyboard.