The GPS technology can apply in various industries even the billing invoice. It helps providing a paper-free system and make billing easier. 

The gps system makes invoicing easier on everyone involved. The merit about GPS trackers recording everything automatically. So that if your client questions the invoice, you can prove the video to defend their claim. You will have a time stamp of the exact time that you charged them for by regarding the GPS tracker. 

This system also reports almost everything you required. Such as the labor time, vehicle usage, maintenance and vehicle condition. These are all important aspects for your fleet business which need to be taken into consideration when you determine what your pricing should be in order to make a profit.