FIDO U2F is an opening authentication technology which allows internet users to safely provide proof in order to use online services.

Big brands like Facebook, Google, Dropbox, the UK government and more, already started using this technology to further improve security across their services.

The challenge can be completed the use of a USB device, a tap of a button on your phone, connection with specific Bluetooth devices and more.

U2F generates new keys for each service, thus, websites will not have access to your key for another website, which means only the end user has total control,

U2F can be used through:

Phones

Computers

Keychain Devices

USB

NFC

The value provided by the U2F protocol for cryptocurrency lies in the extra control you can have within your exchange account for performing several actions. U2F can be used in specific cases. It doesn’t necessarily mean you will be using this when you log into your exchange but it means you can use this method to confirm a buy order or a sell order within the exchange. Thus providing higher security and potentially preventing thefts.

Many exchanges allow for 2FA, which everyone should use because it further improves your security by requiring password along with a second confirmation through the Google Authenticator. Which means that even if someone steals your password, they won’t be able to log in.

However, U2F innovates in the sense that several other new devices can be used to ( some more quickly) confirm the second defense line in two-factor authentication.