Many golfers wear special shoes. The shoes can be spikeless or with spikes attached to the soles. The spikes can be made of metal or plastic (plastic spikes are also known as "soft spikes") designed to increase traction thus helping the player to keep his/her balance during the swing, on greens, or in wet conditions. In an attempt to minimize the severity of spike marks made on greens, many golf courses have banned metal spikes, allowing only plastic spikes during play.
Rangefinders allow a golfer to measure exact distance to the hole from their current position; they are illegal according to Rule 14-3 of the rules of golf, but the USGA allows individual course clubs to institute a local rule permitting rangefinders, and they are common among recreational golfers. The typical rangefinder is an optical device that is aimed by sighting the scope on the flag and using the calibrated gauge in the optics to estimate the distance based on the flagstick's apparent height. Other rangefinders estimate range using a calibrated focus or parallax control; the user sights the target, brings it into focus, and reads the distance mark on the control. Newer laser rangefinders operate by simply sighting any target and pressing a switch to take a very precise distance reading using an invisible laser. Newer golf carts often include GPS tracking which, combined with an electronic map of the course, can serve a similar function.