There was a guy next to me who almost did the same. The poll worker caught him before he got away.
I'm not sure I like or trust these electronic machines. It was not intuitive to me that you had to press the 'VOTE' button above the touch screen. I was looking for something on the screen itself and finally noticed the big flashing red button (duh) and pressed that to register my vote.
I'd also say that the way they had these machines lined up, there was little privacy. Voters leaving their station and walking behind you could easily see who you were voting for.
All things considered, I'd prefer to go back to the electro-mechanical machines or even better, a paper ballot. I don't really care if it takes a day or two to count them all. We don't need to know the results immediately just to make the TV types happy.
I agree about the big red flashing "vote" button. I don't like how the technology is mixed - - - everything else is happening on the screen and now I suddenly have to go off screen to a "mechanical" button. It's asking for trouble and confusion.