This could be stored on a computer now, though. But numbers can be fudged. Taiwan had an interesting way around this with a receipt lottery. Ask for a receipt,

This could be stored on a computer now, though. But numbers can be fudged. Taiwan had an interesting way around this with a receipt lottery. Ask for a receipt, it has a number on it that enters you in a lottery. Presumably the generation of this number means the sale was reported. https://guidetotaipei.com/article/taiwan-receipt-lottery-%E7%B5%B1%E4%B8%80%E7%99%BC%E7%A5%A8%E4%B8%AD%E7%8D%8E%E8%99%9F%E7%A2%BC https://guidetotaipei.com/article/taiwan-receipt-lottery-%E7...