## Requirements: NodeJS/NPM: https://nodejs.org/dist/v10.15.3/node-v10.15.3-x64.msi Postman: https://dl.pstmn.io/download/latest/win64 ## Installation Steps (on CMD on linux): > mkdir TOTP-APP && cd TOTP-APP > npm init -y > npm install express body-parser speakeasy --save ## Code Paste the app.js file in the TOTP-APP folder. ## Running > node app.js > listening on :3000 ## Output The server has started on localhost:3000. We can use Postman to check the responses.