User Authentication with Next.js (jolvera.biz)
Feb 20, 2019
User authentication with Next.js has been one of the most requested examples by the community. The GitHub issue had more than 300 likes and hundreds of comments with recommendations and proposals.
User Accounts with Next.js — An Extensive Tutorial (medium.com)
Oct 19, 2018
There is an issue on the next.js repo that has been open since the early days of the project (October 2016), it’s called Add login / authentication example and is one of 2 issues tagged Priority: OMG Maximum. The issue has 185 comments, many of which mine (I joined the conversation in February 2017).