Those people probably wanted to pay with cash. Walmart self-checkouts[0] switched to electronic payment only[1] when the national coin crisis hit in June 2020[2

Those people probably wanted to pay with cash. Walmart self-checkouts[0] switched to electronic payment only[1] when the national coin crisis hit in June 2020[2]. [0] https://corporate.walmart.com/newsroom/2020/06/30/new-checkout-experience-seeks-to-eliminate-the-wait-and-add-options-at-the-register https://corporate.walmart.com/newsroom/2020/06/30/new-checko... [1] https://www.quora.com/Why-are-Walmart-self-checkout-registers-no-longer-taking-cash-Is-this-done-on-purpose https://www.quora.com/Why-are-Walmart-self-checkout-register... [2] https://www.frbservices.org/news/communications/063020-federal-reserve-convenes-us-coin-task-force.html https://www.frbservices.org/news/communications/063020-feder...