While in tracking mode why does the blue icon jump around?

In tracking mode, you will see two icons on the screen. The circular icon represents your dog’s position. The blue triangle represents your phone’s position. At times, you may notice the triangle icon is not in the correct location, or it may tend to jump around. That is because the GPS system on smartphones tends to be less precise and a bit jumpy. SpotOn’s GPS system is more accurate than the GPS on your phone.