There was a practice in Germany where people traded registered pre-paid SIM cards openly on a website created for that purpose - which was perfectly legal[1].
However they stopped when a court shot down the surveillance law that made people concerned in the first place[2].
If Austrians are even half as privacy-conscious as Germans, expect much of the same happening.
> If Austrians are even half as privacy-conscious as Germans, expect much of the same happening.
Possibly among groups of people who regularly break the law. I can't see a normal person willingly accepting this sort of risk (e.g. being persecuted for child pornography someone else downloaded) for no good reason.
Also, the authorities will find you anyway if you've ever used a SIM card with your real name in the same phone or even if you only bought the phone from a place where device IDs are registered (like Apple, presumably).
> I can't see a normal person willingly accepting this sort of risk
A lot of Germans did in fact do it. So... there.
Even my father considered doing it, being ever suspicious of the handheld tracking device that is the smartphone we forced on him.
There's not much police will (or can) do once it's established that you traded SIM-cards. It's actually discussed in the first article I linked.
There's also a good chance you weren't even remotely physically close to the phone/sim when the crime was committed.
