A Non-Convertible Currency, also known as a “blocked currency”, is the legal tender of a country that is not traded at all on the international foreign exchange market. This usually occurs due to government restrictions placed on it in order to protect its value or prevent capital flight. Non-convertible currencies are often used by developing countries and emerging markets who wish to control their own economic policy without interference from outside forces.There are several advantages associated with blocked currencies for both governments and citizens alike. For instance, they can be used as an effective tool for controlling inflation by preventing large amounts of money from entering or leaving the country quickly through speculation in foreign exchange markets; this helps maintain price stability over time within domestic economies while protecting against devaluation caused by external factors such as changes in global demand for commodities produced domestically. In addition, these types of currencies can help promote economic development since they discourage short term investments which could lead to destabilization if too much money were flowing out of a certain economy at once - instead encouraging longer term investments which provide more stable returns over time and benefit local businesses more directly than speculative trades would do so otherwise .Despite these benefits however there are some drawbacks associated with using non-convertible currencies; most notably being that citizens may find themselves unable purchase goods from abroad due to lack of access to other forms of foreign exchange besides their home nation's own currency (which cannot be exchanged). Additionally many people living under regimes where these types of financial policies have been implemented tend towards feeling restricted economically since they cannot take advantage of opportunities available elsewhere around world - even when those options might prove beneficial overall for them personally or professionally speaking . This ultimately serves as an important reminder that although blocked currencies can offer certain protections it comes at cost freedom and mobility when dealing with finances internationally.