<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjItMDgvYTNmZWRiMjItY2I5YS00ZGIzLWE5NGItMzFhMWE3MDZkODBlLmpwZw==.jpg"></p><p>The simple patent idea took three years to be granted regulatory clearance. </p>