If you download an unsigned app you need that rigamarole, but it’s easy to distribute a signed app from your website, and a user who knows what they are doing has no real difficulty.

This reduces the chance my 85 year old mum will accidentally download malware while still making it easy for me to install whatever I like on my machine or, for that matter, hers.

And they document how to switch off that protection if you’d like as well.