If they took the card away, how would you enter the card's PIN? That's why places outside the USA do the swipe on the table.
Oh, and you put the tip in on that receipt, and they go back and do a second entry of the tip (sometimes incorrectly, almost always higher when incorrect.)
Worse - the transaction alert -- if you get one -- is the pre-tip amount. Makes no sense.
This isn't a problem you can solve by changing the banking industry. This is a point-of-sale problem.
It's all part of a larger set of "problems with US financial services". The fact that it is technically different vendors is not relevant...
If the upstream providers provded the readers as a leased service instead-- maybe for a few dollars a month-- they could push out insecure gear in a timely manner more aggressively. Just reject connections from old devices because everyone renting the old model has been sent a new one already. It would also eliminate the price of equipment upgrades as a leverage for competitors to peel off customers.
From what I can tell, the machines are fairly locked to the service providers, and require fairly intensive setup, so it's not necessarily like an unlocked phone where you'd save money by buying a device independently of the service.
- Universal, near-instantaneous per transaction alerts. It helps stop fraud right away rather than after-the-fact. It also helps solve problems while they are fresh rather than trying to resolve a month-old+ issue. Some countries overseas do this almost universally.
- On-restaurant-table credit card swipe rather than taking the card away and entering tip later. Many places overseas do this almost universally.
-- Side note on the txn alerts: I suppose it is due to the way Visa/MasterCard are processed, but I sometimes get alerts a day or more after i've done a credit card transaction. Some cards dont even have the option for alerts.
AMEX has great alters, almost instantaneous, but I suppose they control the entire stack, so that makes sense.