I have had great success with yubikey for over a year. Their combo with LastPass is excellent. It even works on my iPhone/iPad with the USB adapter. I highly re

I have had great success with yubikey for over a year. Their combo with LastPass is excellent. It even works on my iPhone/iPad with the USB adapter. I highly recommend you buy some and try them out. I keep a NEO in my rMBP and others on my wife and my keychains for our multiple computers. LastPass allows you to link several yubikeys to one account for a great 2 factor auth secure password store.