How to make force-click in finder show info on item?
You can use BetterTouchTool to map a 2 1 finger Force Click to open Get Info. It's not possible to remap a single finger Force Click with BetterTouchTool. With BetterTouchTool 2.317c, it is now possible to remap a single finger Force Click.


Add Finder as an application so the gesture only takes effect in Finder.
Under Trackpads, add a new gesture of ‘2 1 Finger Force Click’ and choose the predefined action ‘Left Click’.
Choose ‘Attach Additional Action’ and enter the custom keyboard shortcut ⌘I.