My Mac keeps warning that its not recognized. I have used it hundreds of times. Why?

[Bansheefan]

All of my devices but my iPhone are requiring a code to get access to my videos.  These are devices I've used for 2 years now and I want to allow them to be recognized.  How do I do this?  I dont mean adding another notification method; I mean adding more devices.

[JamesC]

At this time, only mobile devices can be listed as a "trusted device" for two-step verification.

For more information on two-step verification, take a look here: https://kb.arlo.com/000062288/What-is-two-step-verification-and-how-do-I-set-it-up