A digital Big Brother is coming to work, for better or worse.

Advanced technological tools are beginning to make it possible to measure and monitor employees as never before, with the promise of fundamentally changing how we work — along with raising concerns about privacy and the specter of unchecked surveillance in the workplace.

Through these new means, companies have found, for example, that workers are more productive if they have more social interaction. So a bank's call center introduced a shared 15-minute coffee break, and a pharmaceutical company replaced coffee makers used by a few marketing workers with a larger cafe area. The result? Increased sales and less turnover.