O papel comum como interface para TV digital

This paper considers the use of a barcode reader as Digital TV (DTV) interaction device. With the DTV, t-learning arises as an opportunity in order to promote the learning to a major amount of people than the traditional e-learning doesn't reach. But, the use of remote control in the DTV has resulted a complex viewer interaction that may cause the user's frustration and irritation and the ease of use is one of the most important factors in the DTV. This paper aims linking the common paper with DTV, in order to get better usabilility and promote more conditions to t-learning. Moreover, this paper also considers a card, a keyboard and commercial product catalogue, using the same technology.