basic release
your beloved kids just got their car license and you're afraid they drive too fast ? first test aim is to monitor you their speed of driving. all you need is a smartphone with a sim inside, choose the proper frequency of getting speed samples,operate it ,and before their drive put it somewhere in the car of the new driver (better somewhere they wouldn't know about-under the chair for example) and take it back after 1 drive or more.
in the list you can see the speed they drove by the frequency you chose before. the fastest the frequency ,the fastest the battery ended-pay attention to this.
