Here is a smart wearable device that aims to replace your passwords. It relies on military grade encryption to protect your data and unlock your smart devices when in range. It stores a password keychain to enable you to log in fast. What if you lose your device? You can deactivate it online. Security is always going to be an issue with wearables like this. The Everykey relies on encryption and spoof prevention. It is compatible with iOS 7, Android 4.4, Windows and Mac devices. You can get it on Kickstarter.