For those on iPhone and at any risk, ICEBlock app is potentially better, as it maintains more privacy.

The reason they don’t do android:

At ICEBlock, user privacy and security are paramount. Our application is designed to provide as much anonymity as possible without storing any user data or creating accounts. While we understand the desire for an Android version of ICEBlock, achieving this level of anonymity on Android is not feasible due to the inherent requirements of push notification services.

https://www.streetsforall.org/

Yes I do!

They are working towards requiring it for all travelers.

Why: Think of this as a trial working towards full automation. They aren’t there yet and are not probably legally allowed to do so, but the idea is that you can be fully tracked like the British, Chinese, and other biometric adopted countries.

Prevention: Reliability and legality. As I mentioned I don’t think they can force it in the US for travel yet as it’s not legally allowed, nor is biometrics entirely reliable as is apparent when facial recognition fails.