| 摘要 |
A weight validating self-checkout system suitable for use in a retail establishment. The system employs weight validation of purchases registered by means of a portable data reader. A customer uses a portable data reader to enter each item which it is desired to purchase into a transaction log. The transaction log also suitably contains price information for each item and a price total for the order. When all desired items are entered, the customer proceeds to a checkout station. The checkout station retrieves weight information for each item in the order and computes an expected total weight. The order is weighed and the weight of the order is compared with the expected total weight. If the weight of the order does not match the expected total weight within a predetermined tolerance, the checkout station signals for an audit of the transaction.
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