+follow region is too small

[ckrey]

When e.g. travelling by train, the location is often reported with no speed indiction and a high value for accuracy (e.g. 2km).

In this case, the radius of the +follow region is set to 50m but at the same time the current location is not determined to be within this region. As a result there is no trigger when the iPhone leave this region.

A possible solution is to set the radius of the +follow region at least to the accuracy of the last location.