In the last couple of years, a lot of ideas and projects came by that required some sort of secure access based on a hardware component. For example, it would be nice to have proper access control for a makerspace of a locker inside a makerspace. Or, it would be nice to create a secure payment terminal for De Haagse Munt. And, in the light of making and DIY, it would be nice if this system would be based on open source hardware and software.
In all the example I found so far, people would use standard nfc cards. This card, in combination with a proper rfid reader
WIP