One of those is the ability to send qubits from one particle to its entangled twin: “quantum teleportation”. Quantum teleportation requires both an entangled pair of particles and a “classical communication channel” (which includes, but is not limited to, shouting loudly). Here’s a bit more detail on how quantum teleportation works. Not a lot of physicists are too surprised that ground-to-space quantum teleportation works (nobody builds and launches spacecraft on a hunch). Just as a quick aside, since it’s often not stated clearly: quantum teleportation does not involve actual teleportation in any sense.