Twinmatic toilet rolls are fitted with spindles that enable the rolls to slide down into a unit, one on top of the other. As a roll is used, the split core can be easily broken and extracted, allowing the next roll to drop down.
The Unit is lockable, so the rolls cannot be pilfered.
Having one roll in use and a spare ensures the washroom is always stocked.
Roll of length at 100m is slightly shorter then the coreless roll system but still roughly equivalent to 3 normal toilet rolls.