One of the best tools to keep your accounts secure

I also understand that Google employees use these to help keep their accounts secure.

In short, it doesn't matter if someone knows you master password, they can't add a device (computer capable accessing your account) unless the have they have a Yubikey

Not only do I not need complicated passwords anymore, but now these accounts are only accessible with this key

and i did everything to secure my accounts before i purchased these

I use these with last pass to protect my online accounts.

SECURE MY ACCOUNT IN FACEBOOK AND GMAIL

Anyone who's serious about using multifactor authentication to protect your online accounts should consider getting this device

Only I have access to sensitive accounts

Works as it should.