butabozuhi writes: A friend (really, it is) has observation of bad behavior on a spouse's cell phone. Serious, potentially illegal behavior. Already seeing defensive and uncharacteristic responses from spouse (denial, wiping home computer browser history). If possible, is there a 'spyware' that can be installed (have pswd access to the device) to look at emails and chat (possibly even browser history) that's not noticeable and won't install a secret backdoor? Don't want to suggest something that winds up compromising any mobile banking or...facebook accounts!! I figure Slashdot users would have great advice (and I realize this might generate lots of extraneous comments). Your help would be greatly appreciated.