The supervisor can start m (and the "auto go" scripts) automatically whenever the device is turned on, can even make sure that m is always running, and allows to control m remotely via SMS.
It is the m philosophy to make developing and running powerful applications on your phone as easy and straightforward as possible. However, this extra control has its price: for instance, the combination of automatic startup and ill behaving m script can make a device very difficult to use or completely unusable. Please take this into account when enabling the supervisor.
We also recommend installing m or at least the m Supervisor & Viewer on the removable memory card, so it can be disabled "mechanically" by removing the memory card from the device.