Does InVision have keyboard shortcuts?

As a Reviewer (using a sharelink URL), Contributor, or Collaborator:
Right/Left arrow keys - Toggles forward and backward in sequence through the prototype
Shift - Highlights hotspots that you've created
As a Contributor / Collaborator on a prototype, while in console mode (when you've clicked on an individual screen and see 4 tabs at the bottom) the following additional options are available:

T - Toggles the insert screen option
B - Toggles the Build mode
P - Toggles the Preview mode
C - Toggles the Comment mode