The document discusses the rise of alternative currencies and their implications for the financial industry. It outlines several reasons for a shift towards alternative currencies, including changes within society and technology. It then describes different types of currencies that currently exist or may exist in the future, including corporate barter systems, loyalty programs, cryptocurrencies, and time-based currencies. The rest of the document discusses the advantages of barter networks, including unlocking unused business capacities and improving profits. It concludes that while these innovations show potential, challenges remain in developing sustainable business models for banks to adopt complementary currencies.