You can now read 10 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

Program to track immigrants grows, drawing scrutiny

Advocates question firm’s methods, especially its use of GPS devices

BURLINGTON — In a weatherbeaten brick building downstairs from a dentist, the tenants in Suite 1A are carrying out the business of the Department of Homeland Security.

Behind a smoky-glass door, a private company called BI Incorporated monitors immigrants facing deportation with office visits, surprise home inspections, and even GPS devices attached to their ankles, making sure they show up for immigration court or their final departure.

Loading comments...

You have reached the limit of 10 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week