On: TSA tries out another biometric system

[wongarsu]

Derailing a high speed trains typically kill around 100 people, which is about the typical passenger count for a 737.

[LatteLazy → wongarsu]

100 tends to be the worse case scenario for derailments, usually on trains carrying 1000s, but I take your point. However, most derailments are not caused from onboard the train, they're caused from interference on track (usually negligence rarely intentional), so there would be little point checking passengers.

[occamrazor → wongarsu]

Derailing a train is _very_ difficult for a passenger.

[throwaway0a5e → occamrazor]

It's pretty easy for anyone who can get on the tracks though.