Fake residency will only help against a lazy unequipped government. However when some governments automatically track metadata of all citizens cellphone signals and sometimes inbound and outbound flights it would be tricky. I mean if they come to you and say here is your signal at these cell towers between January and December. Here is a list of calls you made to your wife, accountant, employer etc. Here︀ you are on CCTV walking to supermarket in June 5,6,10 and 25 and again in︁ Aug, Oct and Dec. Do you still argue you are resident of St Kitts? Everything︂ falls apart with fake residency unless the taxman in your home country is lazy or︃ under resourced.