National Federation of the Blind’s 3,400-person convention was scheduled for Houston. Now it’s going virtual

The National Federation of the Blind expected to draw 3,400 people to its annual convention in Houston this July before the coronavirus pandemic forced it to cancel the six-day gathering.

The Baltimore-based nonprofit has decided the convention will go on virtually, despite the expense and challenge of finding the right way to connect thousands of people — many of them blind — who cannot just rely on Zoom and other computer programs that require looking at a screen.

“We have a technology gap,”…