sure its possible, but as with most of this stuff its about effort vs return

given the small n900 user base, most of which are very technically literate and competent, do you think there is a big return on writing spyware for the n900 ?

most likely not - unless you have some grudge/reason for targetting n900 users _specifically_

one of the benefits of using a dead platform lol (and I am not being sarcastic)