Tap to pay and QR codes both move a payment from a phone, but through different senses. Tap to pay runs on NFC and the EMV contactless standard: you hold a phone or card to a terminal and a tokenised credential is exchanged over a few centimetres. QR code payments are optical, so a camera reads a printed or displayed code, which needs line of sight and a deliberate scan but almost no hardware. Tap to pay suits certified terminals and speed, while QR suits low cost acceptance across many phones.
What each one is built for
Tap to pay is the contactless rail most people already use. It runs on NFC over a few centimetres and carries a tokenised card under the EMV contactless standard defined by EMVCo, so the real card number is never handed over. Its strength is speed and reach: a deliberate tap, and an acceptance network of certified terminals that is already everywhere.
QR code payments come at it from the other direction. A QR code is optical, read by the phone's camera, and defined as a symbology by GS1. It needs line of sight and a deliberate scan, but it also needs almost no hardware. A code can be printed on a receipt, a menu, or a screen and read by nearly any camera, which is why QR is the low cost way to accept a proximity style payment across many phone models.
Both are deliberate acts at a fixed point, and both work well for what they are. Parousya's patented method starts earlier, at detection. It senses a provider over short range radio such as NFC, identifies the nearest correct one, and routes payment through a central server, so the two devices never connect directly. It can also confirm presence without taking a payment. That architecture is covered by US10657515B2 and the divisional US11392923B2.
Side by side
| Dimension | Tap to pay | QR code |
|---|---|---|
| Channel | Radio, NFC at 13.56 MHz | Optical, a camera reads a code |
| Payment standard | EMV contactless (EMVCo) | A code that encodes a payment reference (GS1) |
| Range | A few centimetres | Line of sight to the code |
| Interaction | Tap a phone or card to a terminal | Point a camera and scan |
| Hardware at the point of sale | A certified NFC terminal | A printed or displayed code |
| Credential | A tokenised card, not the real number | A reference the code points to |
| Cost to deploy | Higher, terminals must be certified | Very low, a code can be printed |
| Tamper surface | Hard to alter a certified terminal | A printed code can be covered or swapped |
Choose QR code payments when
- You want the lowest cost to accept a payment, sometimes just a printed code.
- Acceptance must reach many phone models with only a camera.
- A visible code on a menu, poster, or screen fits the setting.
Choose the proximity method when
- You have or want a certified terminal and value speed.
- A tokenised card credential and the existing contactless network matter.
- A close, deliberate tap is the right confirming gesture.
Common questions
- Is tap to pay safer than a QR code?
- Each has a different risk surface. Tap to pay exchanges a tokenised card over NFC at a certified terminal, so the real card number is not shared. A printed QR code is convenient but can be covered or swapped, so a customer trusts whatever it points to.
- Why do QR payments need a camera?
- Because a QR code is optical. The phone reads the pattern with its camera, which needs line of sight and a deliberate scan, per GS1. Tap to pay uses radio instead, so it works by touch without aiming.
- Which is cheaper to accept?
- QR is usually cheaper to deploy, because a code can be printed and read by any camera with no certified terminal. Tap to pay needs an EMV certified NFC terminal, which costs more but rides the existing contactless acceptance network.
- Where does Parousya's proximity method fit?
- Both tap to pay and QR are deliberate acts at a fixed point. Parousya's patented method starts earlier, at detection. It senses a provider over short range radio such as NFC, identifies the nearest correct one, and routes payment through a central server, per US10657515B2 and the divisional US11392923B2. It can also confirm presence without taking a payment.