Did not say the chip will make it not work. I said that one will get less than 100% reliability that it (Tap & Pay by phone) will work. But the point of my post is that if one has a credit card that works with Tap & Pay (by waving the credit card over the terminal) as well as inserting it in a chip reader or the old magnetic stripe, why drag out and turn on the phone to make a payment when a thin credit card will do the trick. As more folks get the new credit cards with this "Contactless" technology, they will find it so convenient that they will leave their phones in their pocket/purse, and use the credit card. Then Tap & Pay by phone will become obsolete.
In theory, yes.
But in my circles, the people I know seldom use contactless on their credit cards, with some even disabling the feature entirely.
And in my area, when the cashier asks the customers whether they'd like to use contactless or the traditional Chip-And-PIN method, 9 times out of 10, it's the latter.
The reason is simple. Quite a number of us would prefer to have at least some method of authentication when doing a purchase. The current form of contactless is basically very insecure as anyone in possession of the card can pay for items below a certain amount for a number of times until a PIN is required to reactivate the feature. A credit card at least gives you an opportunity to contact your bank to cancel these transactions and disable the card permanently. But a debit card is much trickier due to their nature of being tied to your account's balance.
Now, if contactless directly on the card itself requires authentication via fingerprint or 3D face scanning on the terminal itself, that is different and may help encourage more people to use. But in its current form, it's just not as secure as mobile payments or the old Chip-and-PIN method.
Simply put, it's only for convenience. If you like it, feel free to use it. I'm personally just going to stick with mobile payments and the old method of Chip-and-PIN.