Last time I went there (July 2019, Shanghai), I had to submit myself to a fingerprint scan. As I recalled I have done the fingerprint scan previously. But this

Last time I went there (July 2019, Shanghai), I had to submit myself to a fingerprint scan. As I recalled I have done the fingerprint scan previously. But this time, for some reason, the machine did not work or had an error, and the immigration officer saw it. She fiddled with my hand and checked the machine, was confused, then allowed me to passport check anyway. I don't think you can refuse a fingerprint check. But if one can somehow make their fingerprints unreadable, through one way or another, you probably could bypass it. One of my coworker is notoriously hard to fingerprint scan. Her fingerprints are allegedly busted up due to all the hand washing she'd done in her previous line of work. So maybe it can be bypassed somehow.