Using receipt paper as a vehicle for cultural critique, SWAMP artists replace Wal-mart receipt paper with an altered receipt paper. Acquired from Wal-Mart along with surveillance footage of individual customers, the paper’s heat sensitive emulsion is selectively removed to produce images of individual customers when printed upon. The altered paper is rolled up and placed next to the register where back-up rolls of paper are commonly stored. The cashier unknowingly loads the altered paper into the printer, producing portraits of individual customers from the variable content of purchases.