In the current context, where the objective of the central banks is their fight against deflation and sustainable economic growth, the value of money—that is, the interest rate—and the value of a currency—the exchange rate—play an essential role in making decisions about monetary policy.

The use of new technologies has led to growth in the size and complexity of financial markets. This expansion and transformation of finance has led to the frequent emergence of new financial products which demand a society capable of adequately understanding how these markets operate, in order to be better informed when making saving, investment and borrowing decisions.

Despite the fact that the education of society in financial matters is still a distant concept, technology is advancing and radical changes are being made to how we conduct transactions and guarantee the fulfilment of contracts through a new protocol called «blockchain», which may represent a new trading platform in the financial markets and in society in general.

This article presents a reading on the implications of an extremely loose monetary policy considering two basic instruments: extremely low interest rates and synchronised devaluation of currencies in different economies. Some of the reasons that explain the rise of digital currencies and their security system are also analysed.

The globalisation of financial markets has been based on several factors that have enabled their integration. Two of them are financial deregulation and free movement of capital. Especially relevant to this change has been technological progress regarding the connection between markets. This has encouraged and standardised systems for settling and compensating transactions, speeded up trading with integrated services from different markets, and improved the risk-benefit ratio for investors.

As a result of such big change in the economic environment as well as the financial system and its communication patterns, new innovative financial products have been developed. Their aim is to provide protection from growing volatility and increased risk in all financial transactions.

The negative side of globalisation and the high interconnection between markets is the contagion effect of financial crises. The most recent example is the sub-prime crisis that sparked off in the United States in 2007. This caused a drop in liquidity on the global credit market, which in turn affected the economy of several countries, and showed the weakness of the global financial system and its regulatory framework.