Blog
Answer first, for search.
Short posts that answer one question each in the first line. Written for the way people ask search engines and AI assistants.

SecurityIs tap to pay safe?Yes. Tap to pay uses tokenization, so the terminal never sees your real card number. Here is what protects a contactless tap, and where it can go further.April 14, 2025 · 6 min read

TechnologyNFC vs Bluetooth: which is better?Neither. They solve different problems. NFC is a deliberate tap at a few centimetres. Bluetooth reaches across a room. Here is how to choose.December 20, 2024 · 6 min read

MobilityHow does a robotaxi know who to pick up?A robotaxi has no driver to check a name. It recognizes the right rider by phone over a short range signal, confirmed through a central server.July 25, 2024 · 6 min read

PaymentsDoes tap to pay work without internet?On your side, yes. The tap itself is a local NFC exchange that needs no internet. The connection matters at the terminal. Here is the split.July 14, 2023 · 5 min read

TechnologyWhat does NFC stand for?NFC stands for near field communication. It is the short range radio behind tap to pay, transit passes, and the tags you scan with a phone.March 6, 2023 · 5 min read

TechnologyWhat is an NFC tag?An NFC tag is a small unpowered chip that stores a little data. Your phone powers it over radio and reads it on contact. Here is how it works.August 10, 2022 · 5 min read
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Licensing
See your industry in the method?
We license the Parousya method to companies building where proximity and payment intersect. If you can see an application, we would like to hear from you.
