[0x0aff374668]

Interestingly, at DefCon last year, a presentation was talking about how in Africa there are interposer SIM shims that slip over the top of the simcard and provide additional functionality. Citation needed, but I was impressed they could fit a small MCU in such a thin form factor!

[blotter_paper]

Oooh, I like that idea. I've seen those used to bypass carrier locks, but never considered the possibility of restricting write access with one.