Searching for a film name here, or possibly a TV miniseries. Plotline: aliens came to visit Earth and stayed, generously offering their travel technology to us humans. I think it was aired in the mid- to late 1990s.
With teleporting stations around everywhere and accessible to near everyone, travel times were shortened to mere minutes per trip, over any earthly distance. This clean technology revolutionized the world. Soon, humanity couldn't live without, it helped solve so many problems.
Only a few sceptical humans investigated, because both they wondered "why would aliens do this without apparent benefit for themselves", and the apparent lag between 'going in' and 'coming out the other end', which was considerable, a few minutes IIRC. In-universe, the lag was explained away as a technical issue. These humans found the aliens were indeed doing just what you'd need to do: collect all information about a given traveller, down to molecule and atom excitement level, and sending all of it to be replicated at the far end - but aliens were also thoroughly investigating what they had before reproducing it. Possibly they were also altering the copy ever so slightly how they saw fit.
They may have also not deleted the copied data they had. (Not perfectly sure about this last aspect.)