self-checkout; automated checkout
Refers to a checkout machine where customers scan and pay by themselves, without a cashier. Often used in supermarkets and convenience stores.
See also: セルフレジ
Self-checkout machines are increasing in supermarkets these days.
I paid at the self-checkout.
Compound of 無人 (むじん, 'unmanned, without people') and レジ, a clipping of レジスター ('cash register').