The AR Device is a key item that appears in Kingdom Hearts III.
Kingdom Hearts III
To assist Sora in battling the Heartless, Hiro Hamada creates the AR Device for Sora to wear. Sora wears the AR Device while doing a Flash Tracer circuit around San Fransokyo and assisting Big Hero 6. Hiro frequently communicates to Sora with the device.
The AR Device is a black and red headset to match Sora's attire, with two prongs. Its visor is transparent and blue.