<ul><li>US customers express frustration as self-checkout machines prompt for tips without any personal interaction, leading to confusion about where the money goes.</li><li>Customers at various locations, including stadiums and airports, encounter tip prompts at self-checkout kiosks, raising concerns about unclear tipping recipients.</li><li>Some customers comply with the prompts, while others find them confusing and refuse to tip, citing a lack of clarity on who receives the gratuity.</li><li>Tipping remains a controversial topic, with Americans experiencing "tipping fatigue," yet total tips received by restaurants have increased compared to the previous year.</li></ul>

US customers express concerns over being asked to tip at self-checkout, some say its 'emotional blackmail'

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