Push notification is similar to SMS but not reliant on the device connected to a Simcard. Upon registration, 1Kosmos BlockID registers the DID (Distributed Identifier) and is now bound to the user. The experience for push authentication is straightforward. When logging in, the user receives a notification on the trusted devices (either mobile or desktop) associated with the user account. Then, the user is presented with a simple “accept” or “deny” message to allow or prevent the login. Accompanying this action is information about where the request comes from, such as the location, application, or device type. And like the TOTP, SMS, and email authenticators, this method also generates a unique device ID and a seed using a dual key pair value based on the elliptic curve algorithm for the time-based token generation.