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Opening a door is usually done in a single motion – we take for granted that this is just not possible when it comes to one with a locking mechanism, whether it be low-tech like a key or high-tech like an iris scanner.


Most fingerprint-reading door locks require that you depress an area, listen for a click or maybe look for a light, then grab the handle and go – not a big deal, but definitely one more step than necessary.

Donguk Seo proposes a simpler model that works with a single motion – just grab, press and push or pull all in the same simple motion, while an LED on the end lets you know if there is any issue with your first try.