Airplane Spotter -another hobby

If you love an airplane like me or others you might know the term "plane spotter". Its somekind of past time hobby like other hobbies. "Plane Spotter" is actually an individual or a group of people thats enthusiasticly and passionately like to hanging around near an airport at a strategic spot to have a glimpse of an airplane movements in their free time.
I'll think its a universal hobby thats every country got their own indivdual or groups existing to appreciate this activities.
Some of them sometimes equipped with binocular, SLR Camera, Video Camera or occasionally with Airband Scanner (while the latter is some time depend on where you are, I mean, in some countries possessing such radio is against the law, so must be careful if you bring it into such country).
Actually you must take precaution in handling such activities in high security area such an airport. You must adhered to any rules and regulation that is usually clearly shown in the area, carefully read the sign or signboard pertaining to any warning.
Such caution is to ensured that you will not be prosecuted by authority. Remember, there is a cases involving "plane-spotter" in Russia and China thats has been jailed for doing just that.
I'll think elsewhere like in Area 51 the famous place thats signboard warning is everywhere there is people been prosecuted or been warn by the guards. So beware such consequences. Happy plane spotting.