An invisible button is an area in real space that is "clicked" when a person or object, such as a computing device or Smartphone moves into that physical space.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.