Hello everyone! :)
I have a question! First of all I have been able to create communication between Arduino and server. My aim is to send data from the server with (username and password) to the Arduino. And in the Arduino verify if the data sent matches the (username and password) created in Arduino through array and arraylists. With what kind of CODE and arrays and arraylists is it possible to create some kind of, true and false, and send it back to the server?