Reminds me of the sci-fi plot, thus:
Once upon a time, there was a unique Teleporter machine malfunction, client tries again, and it works the second time.
Client found himself in the distant city as planned, but then he eventually noticed that he was about 30 seconds (or 10m) behind another copy of himself. Catches up and meets himself. Oh dear...
At the inevitable Senate inquiry, the Teleported company acknowledged that the piston had jammed.
Yeah. The giant piston in the ceiling of the teleporter machine. It's the piston that jams the original client through the grated floor into the blender.
Yeah, once the client has been copied to the new location, we crush the original.
Crush the original...?
Yeah, that's why the Teleportation Booth is heavily soundproofed. It can get pretty noisy.