Blackline Safety product launched in 2012 and retired in 2020. Precursor to Loner M6 and G7 wearables line of products. Features included an emergency latch, fall and no-motion detection, GPS locating, durable case, check-ins, and alert communication to monitoring personnel. Loner IS was the intrinsically safe version of Loner SMD that could be used in more hazardous locations.