在下面的 Blynk 程序中，他们使用了以下行：

char auth[] = "76aeba5832304e10917b4e1748c34039";

“身份验证令牌”是什么意思？为什么 Blynk 需要正常运行？

程序

#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
int ledPin = 13;
int buttonPin = 4;

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "76aeba5832304e10917b4e1748c34039";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Maximus";
char pass[] = "Acc1234$$";

void setup()
{
   pinMode(ledPin, OUTPUT);
   Serial.begin(9600);
   Blynk.begin("76aeba5832304e10917b4e1748c34039", "Maximus", "Acc1234$$");
}