NFC and ultra wideband solve different problems. NFC runs at 13.56 MHz over a few centimetres and expects one deliberate tap, which makes it ideal for payments and pairing. Ultra wideband measures distance and direction precisely across a room, accurate to roughly ten centimetres, with secure ranging defined by the FiRa Consortium. Use NFC when a close, deliberate touch is the interaction, and ultra wideband when you need to know exactly how far away and in which direction something is.
What each one is built for
NFC is built for a close, deliberate exchange. At 13.56 MHz and a few centimetres, it confirms presence by touch, needs no pairing, and moves small payloads. That is exactly what a payment, a transit fare, or a tap to pair wants: an unambiguous act at a single point, on hardware that is cheap and embedded in almost every phone.
Ultra wideband answers a different question. Instead of confirming a touch, it measures how far away something is and in which direction, with fine ranging accurate to roughly ten centimetres and secure ranging defined by the FiRa Consortium. That precision suits digital car keys, finding a tagged item, and spatial awareness across a room, where NFC's few centimetre range would be far too short.
Parousya's patented method can sense either radio. Ultra wideband is one of the short range transports it works over, alongside NFC, Bluetooth, and WiFi Direct. The value is not the ranging or the tap. It is the server in the middle that identifies the nearest correct provider and routes the transaction through a central server, so the two devices never connect directly. That architecture is covered by US10657515B2 and the divisional US11392923B2.
Side by side
| Dimension | NFC | UWB |
|---|---|---|
| Primary job | Close, deliberate data exchange | Precise distance and direction measurement |
| Range | A few centimetres | Across a room, tens of metres |
| Precision | Presence at a touch | Fine ranging, to about ten centimetres (FiRa Consortium) |
| Interaction | One deliberate tap | Continuous, hands free ranging |
| Direction sensing | No | Yes, it can resolve angle as well as distance |
| Typical uses | Payments, transit, pairing | Secure ranging, spatial location, digital keys |
| Maturity and cost | Very low power, low cost, widely embedded | Higher complexity, newer in phones |
| Standards body | NFC Forum | FiRa Consortium |
Choose Ultra-wideband (UWB) when
- You need to know precise distance and direction, not just presence.
- The application is secure ranging, spatial awareness, or a digital key.
- Hands free, continuous location matters more than a single tap.
Choose the proximity method when
- A close, deliberate tap is the natural interaction.
- You want broad device support and very low cost.
- The job is a payment or a quick pairing, not spatial tracking.
Common questions
- Is ultra wideband better than NFC?
- Neither is better in general. NFC is built for a close, deliberate tap and is cheap and widely embedded. Ultra wideband is built for precise ranging across a room, accurate to about ten centimetres per the FiRa Consortium. They answer different questions.
- What is ultra wideband good at?
- Measuring distance and direction with fine precision and secure ranging. That makes it strong for spatial location, digital car keys, and finding a tagged item, where NFC's few centimetre range would be too short.
- Does NFC measure distance?
- Not really. NFC confirms that two devices are within a few centimetres, which reads as a touch. It does not compute how far apart things are. Ultra wideband is the technology designed for that.
- Where does Parousya's proximity method fit?
- Ultra wideband is one of the short range transports its patented method can sense, alongside NFC, Bluetooth, and WiFi Direct. The method's value is not the radio. It identifies the nearest correct provider and routes the transaction through a central server, per US10657515B2 and the divisional US11392923B2, so the two devices never connect directly.