A token is a gift-code for the INSIDE LAAX app. For example, you receive a token when you collect INSIDE points and redeem the points for a ticket in the Rewards Shop. In this case you will receive a token for your ticket.
You can activate your tokens in your INSIDE LAAX profile at any time by entering your token-code. Once the token is activated, you purchase a ticket through the app as you would do normally. Before pressing "Complete Purchase" you can redeem your activated token and the value of the token will be deducted from the total amount.