Considering your indoor sign options? There are a lot of interior sign types, all of which serve different functions. You can make the best decision for your business by choosing the sign that best supports your goals. What do you need: do draw attention to sales, help customers find your office, or help people with disabilities get around your building? Here are the signs you might use, and their best uses. Lobby Signs Lobby signs are like your company’s handshake. They welcome customers into your lobby and let them know they’re in the right place. Plus, they reinforce your branding.