GPS technology the focus on Day 5 of second-degree murder trial of Erick Buhr [Video]

Testimony continued Monday at the trial of Erick Buhr, who has pleaded not guilty to the second-degree murder of his grandmother, Viola Erb.

At the time of her death, in September 2022, Buhr was serving a conditional sentence and wearing an ankle bracelet. That device was collecting data on his location once every minute.

The Crown showed maps, as well as raw data, of Buhr’s locations in court. That information was gathered from his ankle bracelet between 11 a.m. and 2 p.m. on the day of Erb’s death.

Stephen Tan, the director of operations for the company that operates the compliance monitoring program, took the stand Monday.

He said the system requires communication with five to 21 satellites to get a location. When a bracelet is outside, there are fewer obstructions in the way and it can typically access more satellites. He testified that, when the person wearing the device …