There are barriers that are in existence.
They face barriers that are cultural as well as practical.
One, already in place, has wand-style barriers that are opened with electronic cards.
"We're trying to overcome some of the barriers that are around," she said.
Some digital Samaritans have to work to get around barriers that are set up to protect people's privacy.
Q. Do you think you would be able to invent the Web today, given the barriers that are emerging?
The government should abolish tuition fees now to take away economic barriers that are a deterrent to accessing university.
"The question is whether this will put up barriers that are so discouraging economically that it will actually restrict private equity firms.
It is time for some fresh thinking about the invisible barriers that are keeping the upper echelons of society resolutely male.
Unhealthy housing conditions and wrongly denied food stamps and disability applications present significant barriers to health for many vulnerable patients, barriers that are best removed through legal interventions.
There are significant barriers that are already in this place that deter people from speaking out about human rights abuses and substandard clinical care.
