You might, however, get investigated (search warrant etc) because unless such mixing becomes really common, it's reasonable for the authorities to suspect you for the crime in the first instance.
This is a myth. If you didn't commit a crime, you aren't on the hook for it.
This is a nice theory. In Germany, if you are the owner of a SIM card associated with a crime, it is well possible that a prosecutor will consider this sufficient for a warrant, and the police will visit you early in the morning, taking away all your digital devices for something between three months and some years.
Regarding the Wi-Fi hotspot examples you provided (which are not quite the same), in Germany there is a nice legal construct called the "Störerhaftung" (liability for interference), in which you have a civil liability for e.g. copyright violation commited over your uplink.
This is a nice theory. In Germany, if you are the owner of a SIM card associated with a crime, it is well possible that a prosecutor will consider this sufficient for a warrant, and the police will visit you early in the morning, taking away all your digital devices for something between three months and some years.
Like I already said: just because you aren't already on the hook for it doesn't mean that you won't be legitimately suspected of the crime in the first instance.
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I suppose a problem with that might be if someone who takes your SIM does something illegal with it. Then you are on the hook for it.
This is a myth. If you didn't commit a crime, you aren't on the hook for it. For example: https://arstechnica.com/information-technology/2016/08/publi...
You might, however, get investigated (search warrant etc) because unless such mixing becomes really common, it's reasonable for the authorities to suspect you for the crime in the first instance.
Edit: perhaps a better example is https://torrentfreak.com/eu-court-open-wifi-operator-not-lia...
This is a myth. If you didn't commit a crime, you aren't on the hook for it.
This is a nice theory. In Germany, if you are the owner of a SIM card associated with a crime, it is well possible that a prosecutor will consider this sufficient for a warrant, and the police will visit you early in the morning, taking away all your digital devices for something between three months and some years.
Regarding the Wi-Fi hotspot examples you provided (which are not quite the same), in Germany there is a nice legal construct called the "Störerhaftung" (liability for interference), in which you have a civil liability for e.g. copyright violation commited over your uplink.
(IANAL)
Like I already said: just because you aren't already on the hook for it doesn't mean that you won't be legitimately suspected of the crime in the first instance.