Originally Posted by
moondog
Some checkpoints do biometric scans at kiosks OR counters, but not both. This stuff is usually clearly signposted IME though.
As I've entered a number of times under TWOV i assume the biometrics will roll over? But yes, first time I China (Shanghai) the machines were before the immigration section (although I think they were still checked at the desk) and each other airport (5 of) they have just been taken on entry.