What is the best website to verify/authenticate a gaming account? - Quora

Nintendo - Authy

How to add 2-factor (2FA) verification to your Nintendo Account

Help with logging into warframe.com using Nintendo Switch account (details in comments) : r/Warframe

How to Set up Two-Factor Authentication for Your Nintendo Account

Nintendo Switch Two-Factor Security: How To Turn It On (And Why) - SlashGear

Intro to Nintendo Switch REST API, by Mathew Chan

Nintendo rolls out two-step authentication for online accounts

How to Secure Your Nintendo Account on Your Switch

Nintendo now lets you sign in to your account with passkeys - The Verge

FAQs - SWITCH edu-ID - SWITCH Help