Leah Esguerra, right, a social worker at the San Francisco Public Library, goes over a list of homeless people that had checked in with grounds patrolman Paul Little in San Francisco. (AP Photo/Marcio ...

One current trend in library technology aims to improve the engagement of patrons with libraries or to provide tools to help users work more effectively. In many respects, the technologies on display ...

With more people than ever before with mental health problems and basic needs such as food and shelter, libraries like this one in San Francisco are adding new services to their repertoire. (AP ...