- Thermal paper - discolours in direct light and heat (fades over time)
- Most can only print in b&w
- All very similar - indistinguishable
- Quantity - excessive use of paper for a small quantity of information
- Thin - feel cheap and invaluable - readily discarded
- Easy to lose - diminishes probability of returning purchased object
PROOF OF PURCHASE - CONTRACT BETWEEN YOU AND SHOP
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