[liberationtech] Cell phone tracking

[Eugen Leitl]

On Fri, May 24, 2013 at 02:19:05PM -0700, Seth David Schoen wrote:

> I'm curious whether people in some countries have had success using
> wifi-only phones, including to make and receive calls by VoIP.  There
> are ways that wifi can be more private in some ways in some situations
> compared to the GSM network, but it's also much, much less ubiquitous.

There might be use cases for using end-to-end encrypting 
VoIP phones on Mifi over 3G/4G (assuming you can penetrate 
the double NAT), as here both security compartments are 
separate.