I can't find anything in a quick search, but I recall seeing a report ~15 years ago on what was considered sufficiently random for lotteries. It was kind of tie

I can't find anything in a quick search, but I recall seeing a report ~15 years ago on what was considered sufficiently random for lotteries. It was kind of tiered, most low-level stuff was based on pseudo with a seed based on dice throw (i.e. they rolled something like 10d10 under specific conditions, then used that as seed) with some higher up stuff being die or ball pick. This was before having entropy generators (like an over level amp hooked to a A/D) being commonplace. Not sure what they like now, but I'm sure political/legal argued about it, yelled at each other and eventually settled on what was "random enough" fairly arbitrarily but sufficiently enough that no one complains. There's probably enough stuff around that needs to be "legally random" to have laws about it though.