The LinkNYC project has been under development in NYC for years, going back to the Bloomberg administration. At its core, LinkNYC is an upgrade to the public telephone system in NYC. Since all of these phone booths are “wired”, the city’s partners in this project are running fiber to many of them and are running broadband to all of them. They are upgrading them with tablets and charging stations. And they are providing free wifi around them.
Here’s a short (~2min) video about LinkNYC the Verge made this week: