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Passport-less clearance fully available at Changi Airport, average clearance time of 10 seconds: ICA
(www.straitstimes.com)
This is a most excellent place for technology news and articles.
I was there on transit hall couple of months ago and on the arrival hall everything is paperless already and all the paperwork can be done via phone or tablet. EDIT: as long as your device have a proper modern web browser. everything can be done easily.
Paperless doesn’t necessarily require biometric data… still, I’ll just skip Singapore.
So you're just giving up any personal freedom to save some time. If you're cool with that, alright. Some people aren't though.
None of this tech is 100% accurate either. You could be passing through and get inferences that peg you as an international drug lord that ends up in prison or worse.
I am not said I am fine with it. But, if you don't want to comply with their requirement. you can't enter their country and I am sure this kind of paperless and biometric immigration check will come to many countries (UK, USA, Japan, Canada already tested it) and it is inevitable. the only workaround atm is just don't travel abroad.