At the time of this project, we had not yet reverse-engineered the Tesla keycard applet - the software which runs on the Tesla valet keycard. Because of this, we were reduced to converting Tesla keycards into single-use implantable devices. This is is the outcome of that project.
Luckily, we have recently constructed our own Tesla® Model 3 keycard applet, which will run on the soon to be released the VivoKey Apex chip. The Apex is a multi-application, implantable NFC secure element that is perfectly suited to run personal identity applications like the "Not A Keycard" applet.