Well there is a lot going on on the video and I wouldnāt call it ONE effect, thereās many effects synchronized when you press the scan.
I have no clue on how they did it but this is how I would do it.
So I donāt know which effect you want to recreate I will just assume you want to recreate the grid and the overall look (so excluding the animations)
The simplest way to make the grid is modeling it (animate its visibility when scan is active )
There is post process transition from normal view to blueish (a simple solution would be to blend different LUT with a spherical mask)
A Vfx a the begining like TV static noise that hide the transition (can be either UI or place in front of the camera)
And some glitch vfx that we can see in the sky that comes randomly
So to sum up the post process effect is not that complex, the cool factor comes from all the looping animations, attached UI element and all animated little things that they add ontop of itā¦ that might have been a lot of work.
At blog they show some hints what they did. As said Pyrath - here is a complex of effects (we can call it āsystemā). IRIS vision - really cool looks at switch (especially). More articles about AC: