I was a CTO strategy consultant for an RFID MIST startup back in 2008 - that is RFID chips on documents, id badges, and any item of value within an organization

I was a CTO strategy consultant for an RFID MIST startup back in 2008 - that is RFID chips on documents, id badges, and any item of value within an organization. The MIST is a series of wireless sensors & network placed throughout the organization, enabling 3D location of any RFID marked object within range of the MIST network. The system could track who, when, and where of any person or item of interest simply by following the RFID through the series of sensors. However, there was zero plan for security of the RFID signals nor the MIST network itself, they were planning on security by obscurity. As I made more and more noise that security was their entire mission, and by not having any themselves they were setting themselves up for massive hacking. Thankfully, their main inventor was more interested in surfing than working, and their investor got deported for tax fraud.