2 Person Authentication

Human interface device designed to encourage collaboration

Our connected devices have made us less social since we can retreat into our Instagram feeds or check email in the presence of others. To challenge our solitary devices and digital practices, 2 Person Authentication (2PA) is a USB human interface device (HID) designed to require the help of another human being and invoke the two-man rule control mechanism if the user wants to log into their online accounts.

Process blog post

2PA device close up

2PA device enclosed

Logging into NYU Albert using 2PA

Logging into Instagram


  • Arduino MKR Wifi 1010
  • Ignition key switches
  • Cherry MX clear mechanical keyboard switches
  • Laser cutter
  • Plastic fabrication tools

© 2020 Adrian Bautista, built with GatsbyJS