Check out this press release by Tel Aviv University about the Smart-Spaces project.

Here are the first two paragraphs:

With endless applications, high-speed wireless Internet access, and free messaging services, smart phones have revolutionized the way we communicate. But at what cost? According to researchers at Tel Aviv University, the smart phone is challenging traditional conceptions of privacy, especially in the public sphere.

Dr. Tali Hatuka of TAU’s Department of Geography and Dr. Eran Toch of TAU’sDepartment of Industrial Engineering have teamed to measure the impact of the smart phone phenomenon on privacy, behavioral codes, and the use of public space. Their early results indicate that although spaces such as city squares, parks, or transportation were once seen as public meeting points, smart phone users are more and more caught up in their technology-based communications devices than their immediate surroundings.