It also works really well as a conversation starter for me. I forget people’s names and the context all the time, but the faces stay familiar, and of course you can tell from their facial expression that we’ve met.

Showoff. I can't remember names or recognise faces. I've settled on a strategy of simply greeting everyone as though I've met them before, which feels a lot more empathic than sending everyone I meet's details to a mass surveillance company.