Page opens, I press TAB to enter the form. Now I have to enter that stupid Captha again. And what about Tablet PC's? I'm not sure there is a lot of mouse moveme

Page opens, I press TAB to enter the form. Now I have to enter that stupid Captha again. And what about Tablet PC's? I'm not sure there is a lot of mouse movement there. But well maybe It could be enough for a lot of desktop users.