Unity2D: Drawing an outline for a selected object/sprite?

Questions & Answers
1

I’m working on a 2D bejewelled-style project and would like to show a selection ‘border’ (a rectangle) around my selected object. Looking around, it seems that a shader, like this:

http://nielson.io/2016/04/2d-sprite-outlines-in-unity/

is what is recommended, but is there not a simpler way?

2

You can draw an outline on any image with the default component.
On inspector, your image component, press Add Component>UI>Effects>Outline

When you select your objects, only needs to enable or disable the outline component.