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Reversing a Fingerprint Reader Protocol (2021)

news.ycombinator.com Unknown 2025-07-28 06:02:37

TLDR: The sensor uses TLS-PSK over USB. We overwrite the PSK and are able to read images. Scan of not-my-finger. I recently got a new Laptop ( Lenovo Ideapad 5 - 15are05 ). Linux compatibility is quite good, as documented in the Arch Wiki. One part that is not working is the fingerprint reader. In this blog post I describe my approach to reverse engineering the fingerprint reader's windows driver and USB protocol. This results in a python script, capable of streaming images from the sensor at

Topics: device driver goodix psk tls
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Scientists Discover the Key to Axolotls’ Ability to Regenerate Limbs

wired.com Anna Lagos 2025-09-29 18:00:00

The axolotl seems like something out of science fiction. This perpetually youthful-looking Mexican salamander possesses a superpower that defies biology as we know it: the ability to regenerate entire limbs, parts of its heart, and even its spinal cord. But how does an amputated limb know whether to regenerate an entire arm from the shoulder down or just a hand from the wrist? This mystery of “positional identity” has fascinated scientists for decades. A team at Northeastern University, led by

Topics: axolotls know lab monaghan regenerate
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