bool pushed2=false;
bool pushed3=false;
bool pushed4=false;
bool pushed5=false;
void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(2) == 1 && pushed2==false) {
    pass+='2';
    pushed2=true;
    Serial.println("pushed");
  }
  if (digitalRead(2) == 0) pushed2=false;
}