Technology

That depends on the nature of what "you" ultimately turn out to be. I tend to suspect (though with only a suspicion to go on and not proof, I probably wouldn't be volunteering) that what "you" ultimately are is the pattern of information stored in the structure of your brain, and thus, any sufficiently perfect copy of that information is the "same" person regardless of continuity of the body. Though creating a second copy before destroying the original would have the caveat that as soon as the second you exists, the different perspective and experience will lead them to diverge into two different people who both have equal claim to the original identity, so that I think to do this, you'd want to destroy the original slightly before, making the process more like resurrection in a new location.