I found something called Immersed (it's a paid-for product with a free tier it looks like so no link - Google will find it) which allows me five monitors (I have three in hardware) and works over WiFi. Would I want to code in it? Probably not - adding an extra 300g for eight hours doesn't appeal and the battery life is going to be pretty short I think. But yes, it works - and you can add a monitor than no-one else can see if you are doing private stuff in work time ... It can let you see your real keyboard, but I don't think the Pico 4 has good enough cameras for that, it seems to need a huge amount of light to see anything!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt AntiTwitter: @DalekDave is now a follower!