Wideband sensor

Which wideband sensor is used when you Are driving the car on the road and how it is connected to know the AFR

Is that wideband meter is connected to the laptop to read the AFR ?

I'd need to know specifically which example you're referring to but I use an Innovate wideband that is connected directly to my laptop via a serial to USB cable. Both Rom Raider and HP Tuners allow direct input of the Innovate wideband into the logger software (along with other popular widebands).