4think backend Routes GET /:userNumber registers new user with predefined params POST /:userNumber/:vehicle after boxes analisys, a post to this URI updates the payment information GET /:userNumber/:room/:boxNumber/code generates QR codes for a box GET /:userNumber/:room/:boxNumber URI that a QR code shows to user after being scanned. Tech Stack Language: Go go1.10.2 linux/amd64 Frameworks and libraries directly used: Echo (routing, github.com/labstack/echo) Go-QRCode (github.com/skip2/go-qrcode) Mongo driver (gopkg.in/mgo.v2) Deploy: Heroku Backend: https://mudae.herokuapp.com/7 Frontend: http://www.mudae.com.br/