INF needed a logo and name for their officiating team, the umpires, scorers and timekeepers. Something that's aligned with the INF brand rules, represents what officiating is... and isn't a whistle.
Using a crescent shape to link the open ends of the INF housing device, a ring symbol is formed. In doing so we create a strong gesture towards how the officiating body is what surrounds, protects and guides the rest of the INF.
A ring is a universal symbol for commitment, strength and honesty and a circle alludes to wholeness, authority and order. It's also an O, the first letter of Officiating/Officials.