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Kroger uses infrared near the checkout lines to similar effect: http://www.timesdispatch.com/business/retail/infrared-technology-cuts-kroger-checkout-time/ http

by mkmk 13y ago

Kroger uses infrared near the checkout lines to similar effect: http://www.timesdispatch.com/business/retail/infrared-technology-cuts-kroger-checkout-time/ http://www.timesdispatch.com/business/retail/infrared-techno...