Messages sent to all phones in contact with specific towers is not only technologically trivial (for the operator if the cell tower), but also commonly used as part of emergency alert systems all over the world. It doesn’t violate privacy rights, so I don’t really see an issue with the method of alerting.
And avoiding crowd crush is a valid concern if a demonstration turns out 6 times larger than expected (organisers claim 300k+ people, when 50k were expected).
Messages sent to all phones in contact with specific towers is not only technologically trivial (for the operator if the cell tower), but also commonly used as part of emergency alert systems all over the world. It doesn’t violate privacy rights, so I don’t really see an issue with the method of alerting.
And avoiding crowd crush is a valid concern if a demonstration turns out 6 times larger than expected (organisers claim 300k+ people, when 50k were expected).
I see this as an absolute win.