The simplest method is to revert to a cash economy. Payments are accepted only in cash. This, naturally, slows the velocity of money-like products and diminishes their preponderance, obstructing the expansion of economic activity. An even more malignant variant is the barter economy. Goods and services are swapped on a no-cash basis. It is money that generates new value added (by facilitating the introduction of new technology, to mention but one function). In the absence of money, the economy stagnates, degenerates and, finally, collapses because of massive mismatches of supply and demand aggregates and of the types of goods and services on offer and demanded. Still, this system has the advantages of keeping the economic patient alive even following a massive liquidity haemorrhage. In the absence of barter economy, the economy might have ground to a complete halt and deteriorated to subsistence agriculture. But barter is like chemotherapy: it is good for a limited period of time and the side effects are, at times, worse than the disease. In many countries (Georgia, to mention one) defaults are prevented by demanding prepayment for projected consumption. Let us take the consumption of electricity as an example: many heavy users and numerous households do not pay their bills at all. To disconnect the electricity is an effective punitive measure but it costs the electricity company a lot of money. The solution? Programmable Electronic Meters. The consumers buy a smart card (very similar to phone-cards). The card allows the buyer to use a certain amount of prepaid electricity and is rechargeable. The consumer pays in advance, electricity is not wasted, the electricity company is happy, the tariffs go down for all the users. Prepayment does have a contracting effect on the demand and usage of electricity - but this is welcome. It just means that people use electricity more efficiently. A totally different tack is the verification approach. The person making the payment carries with him a card that confirms that he is creditworthy and will honour his obligations. Otherwise, the card also serves as an insurance policy: an entity, not connected to the transaction, guarantees the payment for a fee. This entity is financially viable and strong enough to be fully trusted by the recipient of the payment.