Manufacturers have been using touch screen technology to make products from calculators to computers but some of the gadgets are not friendly for the blind people, say blind advocates.

The issue of considering the needs of the blind was exposed this year at the Consumer Electronics Show in Las Vegas with one prominent blind musician, Stevie Wonder, weighing in.

Advocates argue that creating more simple gadgets that take into account the needs of the blind will be easier to use by sighted people too. Often, people who are driving or have weaker sight cannot use gadgets which need to be seen.

We don't want to hold up technological progress. What we're saying is, think about the interface and set it up in such a way that it's simple .The simpler you make the user interface of a product, it's going to reach more people sighted or blind, said Chris Danielsen, a spokesman for the National Federation For The Blind at a press conference during the 2009 International Consumer Electronics Show.

Wonder noted that some companies have made their gadgets more accessible to the blind, without trying, according to Reuters. He said Apple's iPod and Research in Motion's Blackberry are some products he uses.

On his wish list for blind accessible products are a car he could drive and a Sirius XM satellite radio he could operate.