send fingerprint scanner data to web

i am doing a project based on fingerprint scanner.

vehicle authentication system through fingerprint scanner.
i want to scan thump and transfer that data to a web server and compare with data base after that return authentication status true or falls to arduino through WiFi. if the status is true then turn on the vehicle other wise make a authentication fails indication.

i would like to do this project with arduino mega board, esp8266, GT-511C3 Fingerprint scanner, serial/ parallel LCD display.

my question is how to transfer fingerprint scanned data to web server via WiFi module...

i don't know what is type of data that get from an fingerprint scanner. That's the real tricky part for me can you help me?