I once watched someone crash every fingerprint reader in an extremely high traffic border crossing. The police kept asking him to try the next one, much to the

I once watched someone crash every fingerprint reader in an extremely high traffic border crossing. The police kept asking him to try the next one, much to the dismay of everyone queueing. The machines would BSOD and they'd shut that kiosk. At the time, I joked that his fingerprints were malware or specifically designed to cause a buffer overflow somehow.