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A comment on What could happen if you refuse to unlock your phone at the US border?. Parent comment

Re:What could happen if you refuse to unlock your phone at t... by angry_octet on Friday February 17, 2017 @01:34AM (#13666378)
It doesn't require it, but it helps. The IMEI gives away information like manufacturer, device model and rev, and persists across changes in SIM.
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Re:What could happen if you refuse to unlock your phone at t... by kbart on Friday February 17, 2017 @03:04AM (#13666711)
IMEI is sent when you register to operator's network, so you get that kind of information anyway. Asking for IMEI at the border links person to a physical device so you have a complete set for tracking.
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Re:What could happen if you refuse to unlock your phone at t... by angry_octet on Friday February 17, 2017 @04:06AM (#13666941)
The point is that the problem "Listen to Ms Jane Robert's phone calls" goes from "Of all phones on the network, identify Ms Jane Robert's" to "Ms Jane Roberts has a phone with IMEI xxxx, log all traffic for all SIM identities; prepare implant for LG G5 sold with Vodafone config."
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