Episode #32
Ep. #032: 'The Line That Pays' — Keith Carpentier, QBuster
Keith Carpentier is the CEO and founder of QBuster, the queue management platform now operating in over 10,000 retail locations — including TJ Maxx, Disney, TSA, Cinemark, and a fast-growing roster of healthcare facilities. QBuster manages more than one billion customer transactions annually. In this episode, Keith joins Arthur Zaczkiewicz to unpack why checkout remains physical retail's most persistent friction point, how single-line queue architecture consistently outperforms multi-lane setups despite looking longer, and why self-checkout is slower than a professional cashier — and isn't going anywhere. They also get into retail media network revenue through networked queue screens, the Retail Safety Workers Act, and what QBuster's next-gen hardware is built to do. Blunt, data-grounded, and genuinely useful if you run a store. 00:00 — Introduction 00:18 — What is queue management, and why does it exist? 01:08 — What is the single biggest friction point at physical checkout? 02:10 — How do you balance physical hardware with AI-driven queue management?04:45 — What does one billion transactions a year actually mean for the customer? 05:09 — What do shoppers really want when they're waiting in line? 06:28 — Why does the single-line queue always win — and why do retailers resist it? 09:10 — Is self-checkout broken, or just misunderstood? 13:29 — Why Keith built QBuster, and how a family-owned company became the market leader 17:21 — How queue management works across formats: grocery, movie theaters, healthcare 19:51 — What does QBuster look like in ten years — and what's coming next?
