The City's Reinvent Payphones Design Challenge allowed us to build a team around this vision and share it with the rest of the community.

ENGADGET: NYC awards six Reinvent Payphones finalists, asks public to select favorite via Facebook

"The Reinvent Payphones Design Challenge was an opportunity to reimagine a piece of outdated city infrastructure in the age of mobile, " said the Smart Sidewalks team.

ENGADGET: NYC awards six Reinvent Payphones finalists, asks public to select favorite via Facebook

The Reinvent Payphones Demo Day occurred last night at Quirky, a social product development company that brings new product ideas to life through its online collaborative platform.

ENGADGET: NYC awards six Reinvent Payphones finalists, asks public to select favorite via Facebook