G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
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Theoretical Computer Science
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General Physics & Mathematics
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Financial Or Insurance-Related Operations Such As Payment And Settlement
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"Cash In Digital Currency Out” Converting change from cash payments (e-change - Electronic Change) to Digital currency at any point of sale (POS). Cash is processed via the EFT, blockchain or Ethereum network.