Question : Need app to automatically turn off iphone at location

I'm looking for an app that automatically turns off my phone whenever I am at a certain GPS location.

Example:  When I visit my boss he gets furious with cell phones and I sometimes forget to leave my phone the car.   To minimize any risk that I should become his target, I simply want my phone to turn off every time I go to his office.   Does any app already do this?

Recommendations?

Answer : Need app to automatically turn off iphone at location

aTimeTool:
http://www.mcleaner.com/iphone_w/atimetool.shtml

Probably, this is a kind of a solution - this app will switch the phone into the Airplane mode. It possible to schedule such tasks. I do not think that there is a GPS handling.