Google physical key

Google is getting ready to set personal items as keys to ones google accounts.This sounds good as passwords seems no longer safe for the users even how strong they may be.There will be a physical key which may be ones own finger ring or a usb drive with a chip embedded in it.Even the smartphones may act as a physical key for your google accounts.This tiny usb key is called yubi key.And even with advantages  of this new outcome there are disadvantages even like what happens if one looses his/her key.The firm is right now working on this issue.Lets wait for the new outcome from google