| http://www.w3.org/ns/prov#value | - The apparatus 1 could be arranged so that it can only be operated by authorised users, e.g. by requiring the operator to present a smart card or equivalent to switch the system on and/or including means to identify the operator of the till the cash is being received from, e.g. smart card, biometrics, or PIN (indicated at 150 in FIG. 3).
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