Overview
- A TikTok clip recorded at a Shake Shack kiosk in Salt Lake City appears to show three milkshakes jump from $5.99 to $6.49 each immediately after the user tapped the no‑tip option.
- Shake Shack denied any policy of raising prices for customers who decline to tip and said the affected airport Shack is run by licensee HMSHost.
- HMSHost told Shake Shack it investigated and found a kiosk technology error unrelated to tipping and that the problem has been resolved.
- Reporters note the video alone does not prove causation because software updates, timed price changes or screen lag can create coincidental price shifts.
- The incident has refocused attention on how tip prompts and kiosk interfaces affect customers and what operators should do to prevent confusing or coercive payment flows.