I don&#x27;t think it is a given there really is a market for such devices<p>Reason? From the situation you describe, it is just a small step to &quot;store everything in the cloud; authenticate with your phone&quot; (most locations with a keyboard, mouse, and monitor that people who can afford a fast phone will visit will have fast internet connections, and will easily have the 10W power budget needed to beat your phone, performance-wise)<p>You would have to trust the hardware you use, but you have to, anyways, the moment you plug a modern keyboard or monitor into your phone.<p>Yes, you would be ensured that the software you use on your phone is compatible with the software you use on your &#x27;desktop&#x27; because it is the same software, but you also run the risk that it is suboptimal for either (the fonts may be too big for power desktop use, or you might need a pen for manipulating some not-too-often-used controls), and in the &#x27;use phone to authenticate&#x27; scenario, you run less risk of running your phone&#x27;s battery dry.