Ten years before people began gushing about watching TV on the iPad, there was Sony's Airboard. The tablet device had a 10-inch screen and connected via Wi-Fi to a base station that included an Internet connection and TV tuner. Users also enjoyed access to the Web and to e-mail. They could even multitask, thanks to a picture-in-picture TV function. But the Airboard never achieved mass penetration, and many people mistakenly considered it nothing more than an expensive portable TV. The Airboard never launched in the United States.