Jinli Snack in One Hand, Camera in Other — Not Both Greasy

Jinli Snack in One Hand, Camera in Other sounds like a micro-optimization until you are at a wet market off Second Ring Road where the auntie remembers your face after visit three.

A taxi driver who refused small talk until I mentioned food once got locked out because the fingerprint reader hates sweaty thumbs. The fix took less time than telling the story.

Try this once: write the rule on your phone lock screen for three days. If it survives, it is yours.

Works for me in Chengdu humidity.