The Fureai Kippu is a well-known type of sectoral currency. These "caring relationship tickets" support a time-dollar system used in Japan to provide health care to the elderly and the disabled. Individuals earn the currency by spending their time providing care to someone in need. The hours of service they accumulate can be used to pay for their own care in the future or for the care of a family member with a present need.
Other examples of sectoral currencies include loyalty program rewards and gift cards. Regional currency examples include BerkShares, Toronto dollars and Lewes pounds.
Investment dictionary. Academic. 2012.