ToneTag Backend and React front ends we built for ToneTag
ToneTag runs sound-wave payments, with offline transactions and voice-based authentication. We built the React front ends and backend services, using MongoDB for data and Elasticsearch for transaction and merchant lookup. The constraint that shaped the work was reliability across noisy environments and devices that may have no data connection.
- Web Development
- Backend Engineering
ToneTag Backend and React front ends we built for ToneTag - what we built and why.
ToneTag runs sound-wave payments, with offline transactions and voice-based authentication. We built the React front ends and backend services, using MongoDB for data and Elasticsearch for transaction and merchant lookup. The constraint that shaped the work was reliability across noisy environments and devices that may have no data connection.
What we had to solve.
Sound-based payments have to stay reliable across noisy environments and devices that may be offline.
- 01
Encoding and decoding payment data over sound waves reliably across device types
- 02
Supporting payments where data connectivity is intermittent or absent
- 03
Keeping voice-based authentication secure against replay and spoofing
- 04
Searching and surfacing transaction and merchant data at scale
- 05
Delivering a responsive interface across varied front-end touchpoints
Who built it.
- 2 Frontend Engineer
- 2 Backend Engineer
- 1 Search Engineer
- 1 QA Engineer
Built with.
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React -
MongoDB -
Elasticsearch
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{ 01 }
Sound-wave payments
We worked on the flows that transmit payment data over audio, so transactions complete between devices in close proximity.
-
{ 02 }
Offline payments
We supported authorization without an active data connection, extending payments into low-connectivity settings.
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{ 03 }
Voice-based authentication
We built voice verification as an added secure factor at the point of payment, hardened against replay and spoofing.
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{ 04 }
Transaction search
We built Elasticsearch-backed lookup over transactions and merchants for fast retrieval and reporting at scale.
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{ 05 }
React front ends
We built responsive interfaces that present payment flows and merchant tooling consistently across touchpoints.
Outcomes that matter.
ToneTag got front ends and supporting services that hold up across its payment surfaces, with fast search over transaction and merchant data.
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Sound-based
Offline payment authentication
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Voice
Additional verification factor
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Proximity
Device-to-device transfer
Where it landed.
We delivered the React front ends, backend services, and search layer for ToneTag's sound-based payment platform.
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Have a project in mind?
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