I was using JWT authentication on my website for login data. It looks like we can decode the JWT Token without a key. Try the below website. It's shocking to me. So is there any better token authentication method is there apart from JWT Token authentication.
You can try with any key. Example from the site https://medium.com/@siddharthac6/json-web-token-jwt-the-right-way-of-implementing-with-node-js-65b8915d550e
Token: eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJkYXRhMSI6IkRhdGEgMSIsImRhdGEyIjoiRGF0YSAyIiwiZGF0YTMiOiJEYXRhIDMiLCJkYXRhNCI6IkRhdGEgNCIsImlhdCI6MTUyNTE5MzM3NywiZXhwIjoxNTI1MjM2NTc3LCJhdWQiOiJodHRwOi8vbXlzb2Z0Y29ycC5pbiIsImlzcyI6Ik15c29mdCBjb3JwIiwic3ViIjoic29tZUB1c2VyLmNvbSJ9.ID2fn6t0tcoXeTgkG2AivnG1skctbCAyY8M1ZF38kFvUJozRWSbdVc7FLwot-bwV8k1imV8o0fqdv5sVY0Yzmg