Scrip is any substitute for currency which is not legal tender. Scrip is a form of credit which was extended to any company employee who had accrued a salary. Historically scrip was designed to be used at the designated company store. There are documented instances where scrip was accepted at multiple companies and their specific communities.
Scrip has also been created as a means of payment in times and countries where regular money is unavailable, such as remote coal towns or occupied countries in war time. When U.S. President Andrew Jackson issued his Specie Circular of 1836, due to credit shortages, Virginia Scrip was accepted as payments for federal lands.
Scrip as a de facto form of currency within the setting of the mining or logging industry was discontinued around 1952. This was not due to the "right to seignorage" or the right for a country to mint currency without it being violated.
Scrip is also related to the stock market where companies pay dividends in the form of scrip rather than paying actual currency. It is also a written document that acknowledges debt.
Cards do not have any value until they are sold, at which time the cashier enters the amount which the customer wishes to put on the card. This number is rarely stored on the card, but is instead noted in the store's database. The major exception is in many public transport systems, and library photocopiers, where a simplified system (with no network) stores the value only on the card itself (a stored-value card). To thwart counterfeiting, the data is encrypted, though not very strongly given the relatively low amounts of money involved. The magstripe is also often placed differently than on credit cards, so they cannot be read or written with standard equipment.
Gifts cards are increasingly being offered as consumer incentives at no cost or for a substantial discount. For example, reward points given for the use of credit cards can be exchanged for a variety of gift cards and some companies will offer high value gift cards at a discount. Gift cards are readily available at a discount using online trading services.
There are websites that allow users to buy and sell gift cards. Sellers use these websites because the gift card is not to a store of their liking, and buyers because this provides opportunities to buy these cards for less than they are nominally worth at the business.
Unless the gift card is obtained at a discount (paying less than the actual value of the card), some point out that trading real money for scrip is unproductive as it then ties up that money until it is used, and usually may only be used at one store. VISA and American Express have issued pre-paid cards (not connected to any bank account) that can be used anywhere that accepts VISA credit cards or debit cards.
One disadvantage of gift script is that some gift card providers will charge "maintenance fees" on the cards, particularly if they are not used after a certain period of time or the card will expire after a given period of time. Some US States have enacted laws to eliminate non-use fees or expirations but the buyer should review the gift card conditions prior to purchase.