If they relied on quantum teleportation: no, not in the slightest. In order to QT a particle (explicitly not using the verb "teleport" here, because it's a very different thing) you need three additional particles for every particle you're QTing. A pair of entangled particles that act as your fascilitator, and a spare particle on the other end to take on the information state of the one you're QTing.

So unless your sci-fi teleporter comes with a massive amount of pre-entangled particles half of which you have, half of which "they" have, plus an equivalent-mass-worth of particles to accept the teleportation subject, it's still just science fiction.