I'm taking philosophy as a senior subject in high school, so my depth of understanding of pretty much any philosophical theory is very limited. I think I side more with a physicalist account of the mind, believing AI can one day be persons, and a few other things that point me that way, but reading about Derek Parfit's account of the 'teletransportion paradox', pasted from his Wikipedia article below, I'm doubting this a bit.
In Divided Minds and the Nature of Persons (1987), Parfit asks the reader to imagine entering a "teletransporter", a machine that puts you to sleep, records your molecular composition, breaking you down into atoms, and relaying it to Mars at the speed of light. On Mars, another machine re-creates you (from local stores of carbon, hydrogen, and so on), each atom in exactly the same relative position. Parfit poses the question of whether or not the teletransporter is a method of travel—is the person on Mars the same person as the person who entered the teletransporter on Earth? Certainly, when waking up on Mars, you would feel like being you, you would remember entering the teletransporter in order to travel to Mars, you would even feel the cut on your upper lip from shaving this morning.
When reading this, I'm sure that there is more to consciousness that can be copied over by the teleporter. From what I understand, this should imply I lean towards dualism (does thinking there's something more here mean I believe in a soul?), but when searching about the relationship between this experiment and the Mind-body problem, I find very little, leading me to believe I have misunderstood this conclusion.