This information may be of use in an emergency while activating.
I can see at some time in the future, an activator on descending from the summit to the car park and finding that he has locked his/her keys in the car?
Does your car have remote keyless entry? This may come in handy someday. Good reason to own a cell phone: If you lock your keys in the car and the spare keys are at home, call someone at home on their mobile phone from your cell phone. Hold your cell phone about a foot from your car door and have the person at your home press the unlock button, holding it near the mobile phone on their end. Your car will unlock. Saves someone from having to drive your keys to you. Distance is no object. You could be hundreds of miles away, and if you can reach someone who has the other “remote” for your car, you can unlock the doors (or the trunk).
It does work! We tried it out and it unlocked our car over a mobile phone!"
Another useful to know information is Hidden Battery Power
Imagine your mobile battery is very low and you have perhaps an emergency situation while on the hills. There is a hidden battery source and to activate it, press the keys *3370# your mobile will restart with this reserve and the instrument will show a 50% increase in battery. This reserve will get charged when you charge your mobile next time.
Hope this info is of use.