National Coalition for the Homeless supports the idea though.
The experiment is called "homeless hot spots" and will pay homeless people at least 50 dollars a day to carry around mobile WIFI devices with a T-Shirt that announces I'm a 4G hotspot.

The homeless can make even more money depending on how many connect to their 4G hotspots as people are encouraged to pay the homeless person directly for the connection.
It's an idea that Scott Arthur with the Star of Hope says is demeaning.
"It seems to us that what they're doing in Austin is more of a self-promotion type of thing and they're using the homeless, which is a very sad thing to do," says Arthur.
But Neal Donovan, President of the National Coalition for the Homeless thinks there's nothing wrong with it.
"If that person is not feeling demeaned by the program or doesn't feel that its something they don't want to do then who are we to judge," says Donovan.

Source: buzzfeed.com via Pinterest
The experiment has been called a modernized version of homeless selling street newspapers.