By that I mean they can't find how these mobile devices are improving worker productivity, which computers have been doing quite ruthlessly for the last 70 years.
For example, the KDDI mobile phone strapped to a cleaning worker's waist can tell the difference between actions performed such as scrubbing, sweeping, walking an even emptying a rubbish bin.
Despite the influx of worker-owned devices, BlackBerry and Windows Mobile remain surprisingly strong, at least they did in Q1 when this survey was conducted.