Money

As might be expected, there are several means by which financial transactions are facilitated in the Sanctum.

Credit Chits
See article: Credit Chits

Barter
Because there is no outside trade and mining has virtually ceased since the dome went up, raw materials aren't coming in to the Sanctum any more. That means recycling of electronics, etc, is actually a very important thing... in a way. The culture is still very consumerist, but there's an entire underclass of people in district 4 who subsist entirely on digging recycleables from the garbage dumps and selling them back. That also means unattended items that contain these materials get stolen. Often.

Precious Metals
Certain metals in particular are used as a completely non-traceable and non-sourced form of currency, but this is heavily discouraged by the sanctum. The most important are, in order:
 * 1) Neodymium
 * 2) Gallium
 * 3) Ruthenium
 * 4) Palladium
 * 5) Platinum
 * 6) Titanium
 * 7) Gold