A pacemaker, which unconfirmed media reports say Nancy Guthrie has, does not contain GPS and cannot be used to track a person's location. A pacemaker will continue to function even if it stops syncing ...

Data from Nancy Guthrie's pacemaker has helped shed light on the events leading up to her kidnapping, but there are significant limits in how much data the devices can collect. Most importantly for ...

Boston Scientific announced multiple recalls but has said its battery issues were limited. One internal test in 2025 found batteries with an “extremely high failure rate.” Credit...Illustration by Mel ...