Good question. nostr:nprofile1qyxhwumn8ghj7cnjvghxjme0qyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hxgtcqyppfkc8qpszsw2g5y9ymvnwfapca4p8sj5upe954qqgk4fc6gmu02r5m09w can fill in the details. But they seem to update the merchant's POS system to include a crypto feature.