Committee hears proposal to require GPS tethers for aggravated domestic violence arrestees

Chair Lightner introduced House Bill 4525, which would require an electronic monitoring device (tether) as a bond condition for anyone arrested for aggravated domestic violence. The sponsor said the bill was part of a "safe cities, safe communities" platform and described ongoing work with courts on indigency and victim protections.

Dave Sheppergrove, a monitoring-industry executive testifying for the sponsor, described the state of modern GPS ankle monitors: they typically collect a location point about once a minute (and up to every 15 seconds on a violation), run five to seven days on a full charge, use GPS plus Wi‑Fi and cell triangulation, and transmit encrypted location data to secure servers. He noted safety requirements and operational limits — for example, an industry standard requires devices be removable with medical shears in a minute or less for medical emergencies.

Committee members pressed on implementation questions. Representative Breen and others raised the devices' monthly costs (members cited figures of roughly $100–$300 per month), whether defendants would be reimbursed if later found innocent, and how indigent defendants would be accommodated. The chair said some counties use pretrial funds to cover monitoring in certain programs but acknowledged more policy work is needed on funding and indigency protections. The sponsor and Sheppergrove discussed certification of monitoring companies and possible penalties if providers fail to notify authorities of breaches.

The record shows civil-liberties organizations registered written opposition: the ACLU of Michigan and the Vera Institute of Justice submitted testimony opposing the bill but did not speak at the hearing. Committee members did not vote on HB 4525 at this meeting and signaled further work on cost, certification and victim protections would continue.