Hardware and software application for the tracking, storage, encrypting, and transmission of sales and tax data from commercial transactions, and the issuing and printing of electronic signature on commercial tickets, in the form of a control unit device that connects to electronic cash registers or POS systems

'applic':4 'cash':43 'commerci':18,29 'connect':40 'control':36 'data':16 'devic':38 'electron':26,42 'encrypt':9 'form':33 'hardwar':1 'issu':22 'pos':46 'print':24 'regist':44 'sale':13 'signatur':27 'softwar':3 'storag':8 'system':47 'tax':15 'ticket':30 'track':7 'transact':19 'transmiss':11 'unit':37

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