* Guido Guglielmi

![Figure1](http://www.ajnr.org/https://www.highwirestage.com/content/ajnr/40/11/1791/F1.medium.gif)

[Figure1](http://www.ajnr.org/content/40/11/1791/F1)

Title: Mechanical Password. Mixing the analog world with the digital world: Instead of having electronic passwords, the BEST way to protect information is still the dear old lock!

*   © 2019 by American Journal of Neuroradiology