[lxgr]

> [...] authenticate to production machines using the biometric sensors on their mobile devices

How does adding a mobile phone with a significantly larger code and hardware base improve security?

> eliminating the need for insecure RFID cards altogether.

Why not use a secure card system instead?

I can see the convenience factor, and that might well make for a more effective system all in all, but in terms of security, I don't see this as a step forward.