I've only really noticed Identicon-like images on StackExchange sites, but didn't realise they were actually different images! But now I think about it, I'm sur

I've only really noticed Identicon-like images on StackExchange sites, but didn't realise they were actually different images! But now I think about it, I'm sure I've seen them elsewhere too - until I realised this, I had no idea Identicon was a thing.