Pokemon Go will give players an idea of the Pokemon in the nearby area with icons appearing the bottom right corner of the app. They remain shrouded in shadow when you haven't yet caught that type.
---------------------------------------------------------------------------------------------------------------------------------
but having an idea of which Pokemon are available to you could make all the difference as as you collect and train to be the very best like no one ever was.
Not only will the tracker list nearby Pokemon, but the number of footprints underneath the Pokemon will show you how far away that Pokemon is (one footprint being close and three being farther away). You can track a Pokemon by tapping on it, at which point only that Pokemon will appear in the bottom right corner, and the icon will begin blink if the steps change when you are closer or further away. When the Pokemon has no footprints underneath it, will be summoned in your radius.
----------------------------------------------------------------------------------------------------------------------------