The tablet spins around. Three buttons glow across the top: 18%, 22% and 25%. A fourth button sits below them in smaller, grayer type, simply reading “No Tip.” The employee waits for you to choose, as does the woman in line behind you. You bought a coffee. 16 seconds and one latte handoff later, your thumb lands on 22%, and you could not say why.

Defenders of tipping call gratuities a reward for good service, and most Americans agree in principle: 77% cite service as a major factor in how much they leave. What people report, however, rarely matches what they do. Pooling decades of studies on this tipping question, researchers found that service ratings explain less than 2% of the variation in tip percentage. Ask diners to describe their own habits, though, and they will claim a swing from roughly 9% for poor service to 25% for excellent. Their receipts tell a duller story.

Gratuity guilt did not arrive with the touchscreen; it has always existed inside tipping norms. In one survey, 60% of American respondents admitted they tip to avoid feeling guilty and 44% to avoid embarrassment, alongside the 85% who cited the social norm itself. Thus, despite gratitude itself scoring high on the same list of reasons to tip, it has never operated alone. What digital checkout does is stage that pressure. Flipping a screen makes soliciting a tip easy and strips the awkwardness from the worker’s side of the counter, while the employee watching the customer chooses supplies a fresh motive: shame. The old paper slip gave you a pen, a blank line, and privacy. A tablet offers time constraints and an audience. Small wonder that 72% of Americans now say they get asked to tip in more places than they did five years ago, that two-thirds think poorly of the system, and that 30% call it out of control.

The escalation follows a mechanism economists have already mapped. Model the norm as the previous period’s average tip, let a few customers exceed it because generosity feels good, and the average climbs. With that, the next period’s norm climbs with it. That loop explains why the restaurant standard roughly doubled over the last century from 10% to a range some American travel guides now put at 15% to 25%. Restaurants have long nudged the cycle along by printing suggested amounts on the check. The screen finishes the job. Defaults now set the anchor before the diner forms any judgment at all.

That transfer of financial power is what corrodes the meaning of tipping. The reason customers keep tipping over an automatic service charge is control; they want to pay according to what level of service they actually received, and to show gratitude in proportion to how grateful they feel. A preset button deletes both halves of that. Modern tipping tracks the size of the bill rather than the quality of anything, which turns it into a hidden fee on the cost of eating out. The gap shows most plainly when a worker simply takes a finished item off a shelf and passes it across the counter, then turns the terminal towards you asking 22%. What service have they done that is worth tipping for?

None of this is an argument against paying the server. The federal tip credit has frozen the tipped minimum wage at $2.13 an hour since the 1960s, despite its original design tying it to half of the regular minimum wage, which would put it near $3.62 today. Tips supply roughly 58% of income for servers in full-course restaurants. In states that have eliminated the tip credit and require employers to pay the full minimum wage on top of tips, poverty among tipped workers is roughly half the rate seen elsewhere. The people working behind the counter didn’t create this system, they’re the ones left to navigate it.

Thus, the fix is not stinginess. It is transparent menu pricing that covers the real cost of labor, pushing financial responsibility onto the employer, not the customer. Until restaurants adopt that model, treat the default tip for what it is: a suggestion from the party collecting the money. If no one served you, there is no service to tip for. When someone does, tip generously and let the tip reflect the service you actually received, not whatever percentage a tablet happens to suggest. It is just a toll with better graphic design.