I personally like the idea of the Nymi. http://www.getnymi.com/ http://www.getnymi.com/ There are plenty of NFC-like standards, and smart card-like authenticat

I personally like the idea of the Nymi. http://www.getnymi.com/ http://www.getnymi.com/ There are plenty of NFC-like standards, and smart card-like authentication protocols. Can we just standardize on one of them, get the hardware out there, and solve this problem already.