You can see the location trail (breadcrumb) for devices that are out in the field. Here is how:
Select the device(s)
Click on the 'Show Selected' icon (the pin surrounded the replay icon)
Pick the date range and hit the 'Auto' button (on your right under the last location details).
Replay button would playback the route, and the 'info' would open a bubble with time and other details over the each data points.
The attached screen image below illustrates the above.
