A [[Shelf-Top]] device is a self hosted server that manages a decentralized node of the [[Universal Basic Income (UBI)]]. When Anna and Bob [[Transfer Time to Another User in Person]] the utilize their [[Pocket]]. However, to synchronize the transaction with the rest of the ledger, they will need to connect the [[Pocket]] with their [[Shelf-Top]]. This guarantees a self-regulated, fraud-free, decentralized transaction system that does not require any third-party validation.