Info is outhere you only need to contrast different sources. Answering your question, yes I write some post, here the links:
https://ecency.com/hive-167922/@yecier/cuba-manual-for-a-economical-disaster
https://ecency.com/hive-167922/@yecier/cashless-society-vs-democracy-and-privacy
https://ecency.com/hive-167922/@yecier/cashless-society-vs-democracy-and-privacy