Police track cellphones without court approval

• E-mail

E-mail this article
To:
Invalid E-mail address
Add a personal message:(80 character limit) Your E-mail:
Invalid E-mail address

Sending your article
Your article has been sent.

Law enforcement tracking of cellphones, once the province mainly of federal agents, has grown into a powerful and widely used surveillance tool for local police officials as well, with hundreds of departments, large and small, often using it aggressively with little or no court oversight, new documents show.

To continue, please sign up or log in to BostonGlobe.com

Access the full articles and quality reporting of The Boston Globe at BostonGlobe.com

Sign up

Unlimited Access to BostonGlobe.com for 4 weeks for only 99¢.

Sign up

Are you a Boston Globe home delivery subscriber?

Get FREE access as part of your print subscription.

Start here

BostonGlobe.com subscriber

Click to continue reading this article or to log in to BostonGlobe.com.

• E-mail

E-mail this article
To:
Invalid E-mail address
Add a personal message:(80 character limit) Your E-mail:
Invalid E-mail address

Sending your article
Your article has been sent.