MicroKeyRing
thingiverse
This is a perfect scenario for a compact digital keychain. Place a small programmable board inside, following the step-by-step guide linked below, and you'll be able to carry your credentials in your pocket ready to be automatically entered. Works seamlessly with Linux, Windows, or Mac operating systems. For more details, visit https://www.instructables.com/id/MicroKeyRing.
Download Model from thingiverse
With this file you will be able to print MicroKeyRing with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on MicroKeyRing.