The Ethereum Foundation (EF) and Ethereum Name Service (ENS) are supporting Spruce, a decentralised identity software firm, in their proposed system for secure sign-in using Ethereum.The company's goal is to give users control over their online identities, providing an alternative to handing over personal information to companies like Google, Apple, and Facebook. According to Spruce, the platform already has tens of millions of monthly active wallet users signing with their cryptographic keys.