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In Singapore when you try to buy a tourist sim, it's recorded to your passport.

There's a rumor that you only get 5 within 1 year before you get flagged. Never tried to verify, but I wouldn't be surprised.




There are stores that will sell you SIMs without ID, but they get busted pretty regularly.

One idea that came to my mind is what stops someone from using a foreign SIM with roaming? Assuming of course the SIM isn't tired to your identity?


A roaming SIM itself would be a red flag. On the other hand, grabbing a man based on SIM ID on the street wouldn't be an easy thing in a large city.

SIM tower triangulation is only accurate to a hundred meters or more in a large city.


It's like that in nearly every country now.




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