from yahoo.com: The Obama administration has
been quietly advising local police not to disclose details about
surveillance technology they are using to sweep up basic cellphone data
from entire neighborhoods, The Associated Press has learned. Citing
security reasons, the U.S. has intervened in routine state public
records cases and criminal trials regarding use of the technology. This
has resulted in police departments withholding materials or heavily
censoring documents in rare instances when they disclose any about the
purchase and use of such powerful surveillance equipment.