Following a slime trail is also part of the hunting behaviour of some carnivorous slugs. Body mucus provides some protection against predators, as it can make the slug hard to pick up and hold by a bird's beak, for example, and the mucus itself can be distasteful.
1 Push button: The WPS button is either on the product or a clickable button on a wizard or utility screen.  Personal Identification Number (PIN): The PIN is either on a product label or can be viewed on a wizard or utility screen.
How WPS Works. WPS enables users to securely connect to a Wi-Fi network using a simple PIN number or by pushing a button -- this is also called Push Button Configuration, or PBC. Which version you choose depends on personal preference and the setup options on your particular Belkin model and other hardware in use.