A portkey is an item that takes you through a portal to another location. In that location the player must tap on 5 'Wrackspurts' to get rewards and exit the portkey. The portal uses the device's orientation so the player must move the device around to look for the wrackspurts hidden in the room.
There are Foundables that can only be found in portkeys, making them an integral part of the SOS Task Force's goal to return all the foundables.
Each portkey is locked inside a portmanteau and can only be opened by inserting a key and walking a given distance based on the rarity of the portmanteau. There are currently 2 km (Prized), 5 km (), and 10 km () portmanteaus. During the Brilliant event, 7 km portmanteaus could be found specifically for the event.