Security News > 2021 > April > Signal Adds Cryptocurrency Support

"Your mobile phone still fully functions with no SIM in it."

2, The network sees the equivalent of your phones unique network identifier that is the equivalent of an Ethernet MAC address.

"Your phone can always be traced on the mobile phone network, even without the SIM in it And by the faux logical extension the US"Intelligence Community" have been known to use with drone strikes so must you.

If carried in the pocket with the mobile phone the GPS will cease to function but the mobile will otherwise function.

There is a quirk that is unavoidable in mobile phones talking to base stations and that is the difference between turning a phone off and a phone loosing signal when for some reason it can nolonger communicate with a base station.

If however the phone can nolonger communicate with a base the network assumes it is still on in the same general location untill either the phone fails to "Re-register" or a primary service needs to be made with the phone.

News URL

https://www.schneier.com/blog/archives/2021/04/wtf-signal-adds-cryptocurrency-support.html